Red Hat Linux Red Hat Enterprise Linux Vulnerabilities & Security Advisories
1223 advisories tracked · Red Hat Security Data API · 3 listed in the CISA Known Exploited Vulnerabilities catalog
Every row below is a published Red Hat Linux advisory that VulniPulse classified as Red Hat Enterprise Linux, with the CVEs, affected and fixed releases and exploitation status the vendor stated. Severity mix: 31 critical, 785 high, 382 medium, 25 low.
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Red Hat Enterprise Linux errata (RHSA) via the official Red Hat Security Data API — CVE severity, CVSS and affected packages. A credential-free official source.
Latest Linux Red Hat Enterprise Linux advisories
High [CVE-2026-16313] Sg3_utils: sg3_utils: arbitrary command execution via udev property injection in sg_inq --export
A flaw was found in sg3_utils. The sg_inq command, when invoked with the --export option, outputs device identification data without sanitizing control characters in SCSI name string fields. A newline character embedded in a device-supplied name string can inject arbitrary properties into the udev device database. This could allow an attacker who can present a crafted SCSI device to execute arbitrary commands as root when the device is disconnected. sg3_utils versions 1.34 through 1.48 contain a command injection flaw in the export_dev_ids() function of sg_inq. A crafted SCSI/USB device can embed a newline in this field, splitting sg_inq's udev KEY=VALUE output into two lines and injecting an arbitrary udev property, including REMOVE_CMD. On systems whose default udev rules invoke sg_inq --export for SCSI device identification and act on REMOVE_CMD when a device is removed, this allows a local attacker with physical access to a USB/SCSI port to achieve arbitrary command execution as root simply by disconnecting the crafted device. Exploitation requires physical access to attach the malicious device, consistent with Red Hat's Physical (AV:P) attack vector scoring. The upstream fix (udev-conforming character escaping for this field) has not yet been included in any tagged sg3_utils release; all Red Hat-shipped versions of sg3_utils in the 1.34-1.48 range are affected.
High [CVE-2026-66759] out-of-bounds read in file-icns plugin causes information disclosure or crash on crafted ICNS images
A flaw was found in the file-icns plugin in GIMP. When applying a decompressed mask during ICNS image processing, the plugin reads from the mask data buffer without verifying if the cursor exceeds the allocated resource size. If a crafted file contains a truncated mask resource, the icns_decompress function continues reading past the bounds of the buffer. This out-of-bounds read vulnerability results in information disclosure of heap contents, where memory contents are leaked as alpha channel pixel values, or a crash leading to a denial of service if unmapped memory is accessed. To exploit this vulnerability, an attacker needs to convince a user to process a specially crafted ICNS image with GIMP, reducing the likelihood of exploitation. Due to this reason, this flaw has been rated with a moderate severity. Red Hat severity: Moderate — CVSS 7.1 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H). Weakness: CWE-125. Affected Red Hat products: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9. Red Hat does not currently list a fixing RHSA for this CVE.
High [CVE-2026-66758] integer overflow in file-fits plugin causes a heap-based buffer overflow on crafted FITS images
A flaw was found in the file-fits plugin in GIMP. If a crafted file sets both values to large values, their product exceeds 2^31 and overflows, resulting in an undersized heap-based buffer allocation. This integer overflow issue results in a heap-based buffer overflow when cfitsio subsequently writes a full row of pixels in the buffer, causing memory corruption, potentially leading to arbitrary code execution or a denial of service. To exploit this vulnerability, an attacker needs to convince a user to process a specially crafted FITS image with GIMP, reducing the likelihood of exploitation. However, successful exploitation may potentially lead to arbitrary code execution or a denial of service. Default Red Hat Enterprise Linux security features, including SELinux enforcement, Address Space Layout Randomization (ASLR) and NX (No-Execute) stack protection, significantly increase the difficulty of achieving arbitrary code execution, limiting the impact of this vulnerability. Due to this reason, this flaw has been rated with an important severity. Red Hat severity: Important — CVSS 7.8 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). Weakness: CWE-190. Affected Red Hat products: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9. Red Hat does not currently list a fixing RHSA for this CVE.
High [CVE-2026-17523] Kernel: can:bcm: arbitrary kernel code execution leading to escalate privileges
A flaw was found in the Linux kernel in net/can/bcm.c in can: bcm, where an unprivileged local user can exploit this vulnerability to execute arbitrary code within the kernel, which leads to a local privilege escalation (LPE). This allows the attacker to gain root privileges and take full control of the affected system. Red Hat severity: Important — CVSS 7.8 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-825. Affected Red Hat products: Red Hat Enterprise Linux 8. Red Hat does not currently list a fixing RHSA for this CVE.
Medium [CVE-2026-66757] signed integer overflow in file-sgi (sgi-lib) causes the plugin to crash on RLE SGI images
A flaw was found in the file-sgi plugin in GIMP. When processing an RLE-compressed SGI image, the plugin allocates memory for a row table. The image header dimensions (ysize and zsize) are read as 16-bit unsigned integers. If a crafted file sets both dimensions to their maximum value (65535), the multiplication ysize * zsize overflows the standard 32-bit int boundary before being passed to calloc. This integer overflow issue results in undefined behavior, aborting the plugin and causing a denial of service. Due to this reason, this flaw has been rated with a moderate severity. Red Hat severity: Moderate — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H). Weakness: CWE-190. Affected Red Hat products: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9. Will not fix / out of support: Red Hat Enterprise Linux 6. Red Hat does not currently list a fixing RHSA for this CVE.
High [CVE-2026-64530] Handle TC_ACT_CONSUMED in tcf_qevent_handle
Handle TC_ACT_CONSUMED in tcf_qevent_handle. Red Hat rates this moderate (CVSS 7). Weakness: CWE-825. Red Hat lists fixing advisory RHSA-2026:48222 with package kernel-0:6.12.0-55.93.1.el10_0, kernel-rt-0:5.14.0-284.184.1.rt14.469.el9_2. Affected products named by the advisory: Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9.
High [CVE-2026-64208] crypto/krb5, rxrpc: Fix lack of pre-decrypt/pre-verify length checks
A flaw was found in the Linux kernel's `krb5` crypto library and `AF_RXRPC` component. This vulnerability arises from a lack of proper length checks before decrypting or verifying incoming messages. A remote attacker could exploit this by sending specially crafted messages, leading to a Denial of Service (DoS) condition where the system becomes unavailable. Red Hat severity: Moderate — CVSS 7 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-120. Affected Red Hat products: Red Hat Enterprise Linux 10. Red Hat does not currently list a fixing RHSA for this CVE.
High [CVE-2026-64216] Fix potential UAF in netfs_unlock_abandoned_read_pages
No description is available for this CVE. Red Hat severity: Moderate — CVSS 7 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H). Affected Red Hat products: Red Hat Enterprise Linux 10. Red Hat does not currently list a fixing RHSA for this CVE.
Medium [CVE-2026-66337] Libsoup: libsoup: heap buffer over-read via integer underflow in soup_filter_input_stream_read_until
A flaw was found in libsoup. An unsigned integer underflow in the soup_filter_input_stream_read_until() function causes a heap buffer over-read when parsing multipart HTTP responses. A malicious HTTP server can exploit this by sending a crafted multipart response, potentially causing the client application to crash or disclose sensitive heap memory. A malicious HTTP server can trigger this against any libsoup client using SoupMultipartInputStream by sending a crafted multipart response with a boundary string longer than the internal buffer. This issue is related to but distinct from CVE-2026-1761. Red Hat severity: Moderate — CVSS 6.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L). Weakness: CWE-125. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9. Red Hat does not currently list a fixing RHSA for this CVE.
Medium [CVE-2026-66338] Libsoup: libsoup: http request smuggling via permissive chunk-size parsing in soup_body_input_stream_read_chunked
A flaw was found in libsoup. The chunked transfer encoding parser uses a permissive parsing function for chunk sizes that silently accepts inputs violating RFC 9112, including leading whitespace, plus sign prefixes, and trailing invalid characters. When libsoup operates behind a strict frontend proxy, this parsing differential can be exploited to smuggle HTTP requests. The practical impact is limited because libsoup servers are rarely deployed in internet-facing infrastructure behind reverse proxies. This issue is distinct from CVE-2026-1801 which covers bare LF tolerance. Red Hat severity: Low — CVSS 5.4 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N). Weakness: CWE-444. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9. Red Hat does not currently list a fixing RHSA for this CVE.
Medium [CVE-2026-66339] Libsoup: libsoup: proxy credentials leak to destination server via proxy-authorization header in connect tunnels
A flaw was found in libsoup. After a CONNECT tunnel is established through an HTTP proxy, libsoup incorrectly attaches the Proxy-Authorization header to subsequent HTTPS requests sent through that tunnel to the destination server. This allows the destination server to capture proxy credentials, leading to information disclosure. This causes proxy credentials to be sent in cleartext to destination servers, which can capture and reuse them. This issue is distinct from CVE-2026-12547 which covers credential leak when switching between proxies. Red Hat severity: Moderate — CVSS 6.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N). Weakness: CWE-201. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9. Red Hat does not currently list a fixing RHSA for this CVE.
Medium [CVE-2026-66035] Arbitrary code execution via heap buffer overflow during SSH negotiation
A flaw was found in libssh2. A malicious SSH server can exploit a pre-authentication heap buffer overflow vulnerability by sending a specially crafted packet during the Encrypt-then-MAC (ETM) cipher negotiation. This allows the server to corrupt heap memory, potentially leading to arbitrary code execution on the connecting client before authentication is complete. This Moderate impact flaw in libssh2 allows a malicious SSH server to trigger a pre-authentication heap buffer overflow on a connecting client. Exploitation requires a client to connect to a compromised server, limiting the attack surface. Red Hat severity: Moderate — CVSS 5.3 (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H). Weakness: CWE-120. Affected Red Hat products: Red Hat Hardened Images; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Will not fix / out of support: Red Hat Enterprise Linux 6. Red Hat fixing advisory: RHSA-2026:46955.
Medium [CVE-2026-66034] Information disclosure and potential arbitrary code execution via heap out-of-bounds read
A missing bounds check in the libssh2 publickey subsystem allows malicious SSH servers to trigger a client-side out-of-bounds read, leaking heap pointers that could enable security bypasses, denial of service, or code execution. While requiring user interaction to connect to a compromised server and having high attack complexity, successful exploitation could leak heap pointers, potentially aiding in ASLR bypass and leading to arbitrary code execution or denial of service on Red Hat Hardened Images. Red Hat severity: Moderate — CVSS 5.9 (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:H). Weakness: CWE-125. Affected Red Hat products: Red Hat Hardened Images; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Will not fix / out of support: Red Hat Enterprise Linux 6. Red Hat fixing advisory: RHSA-2026:46927.
Medium [CVE-2026-66033] Denial of Service via integer underflow in AES-GCM cipher negotiation
A flaw was found in libssh2. A pre-authentication integer underflow vulnerability exists in the `ssh2_cipher_crypt()` function when negotiating AES-GCM ciphers during the handshake. A malicious SSH server can exploit this to trigger an out-of-bounds read and a memory copy operation with an extremely large length argument, leading to an immediate client process crash. This vulnerability results in a Denial of Service (DoS) for any connecting client. This Moderate impact flaw in libssh2 allows a malicious SSH server to trigger a client-side denial of service. The vulnerability, an integer underflow during AES-GCM cipher negotiation, can cause a connecting client to crash before authentication. Exploitation requires the client to connect to a specially crafted, untrusted SSH server. Red Hat severity: Moderate — CVSS 6.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H). Weakness: CWE-125. Affected Red Hat products: Red Hat Hardened Images; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Will not fix / out of support: Red Hat Enterprise Linux 6. Red Hat fixing advisory: RHSA-2026:46927.
Medium [CVE-2026-66032] Arbitrary code execution via double-free in SFTP session
A flaw was found in libssh2. A malicious SSH (Secure Shell) server can exploit a double-free vulnerability in the sftp_open() function. This flaw allows the server to corrupt the heap memory of an authenticated client when it opens an SFTP (SSH File Transfer Protocol) session. This heap corruption can lead to arbitrary code execution on the client system, giving the attacker control over the affected system. This flaw requires user interaction, as a client must connect to a specially crafted server and initiate an SFTP transfer, which can lead to arbitrary code execution on the client system. Red Hat severity: Moderate — CVSS 6.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H). Weakness: CWE-1341. Affected Red Hat products: Red Hat Hardened Images; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Will not fix / out of support: Red Hat Enterprise Linux 6. Red Hat fixing advisory: RHSA-2026:46927.
Medium [CVE-2026-56392] GNU coreutils unexpand: Denial of Service via crafted tab stop values
GNU coreutils unexpand: Denial of Service via crafted tab stop values. Red Hat rates this moderate (CVSS 4.4). Weakness: CWE-787. Red Hat lists fixing advisory RHBA-2026:47115 with package coreutils-0:8.30-20.el8_10, coreutils-main-9.11-5.hum1. Affected product named by the advisory: Red Hat Enterprise Linux 8.
Medium [CVE-2026-56391] GNU coreutils uniq: Denial of Service and information disclosure via out-of-bounds read with multibyte input
A flaw was found in GNU coreutils uniq. When processing specially crafted multibyte input with the --check-chars option, an attacker can trigger an out-of-bounds read. This vulnerability can lead to a denial of service (DoS) due to an application crash and potentially expose sensitive information from adjacent memory. Exploitation requires local user interaction to execute `uniq` with the vulnerable options and input. Red Hat severity: Moderate — CVSS 6.1 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H). Weakness: CWE-125. Affected Red Hat products: Red Hat Hardened Images; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9. Under investigation: Red Hat OpenShift Container Platform 4. Will not fix / out of support: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Red Hat fixing advisory: RHSA-2026:46515.
Medium [CVE-2026-64222] avoid double free of pool->stack on AQ init failure
A flaw was found in the Linux kernel's octeontx2-pf driver. This vulnerability involves a double free of memory during the initialization of the Accelerated Queue (AQ) when an error occurs. Specifically, the `pool->stack` memory is freed twice, which can lead to memory corruption. A local attacker could potentially exploit this to cause system instability or a denial of service (DoS). Red Hat severity: Moderate — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-1341. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9. Red Hat does not currently list a fixing RHSA for this CVE.
Medium [CVE-2026-64239] delete tried region in regions_rmdirs
A flaw was found in the Linux kernel's Data Access Monitor (DAMON) system file system (sysfs) component. A local user could exploit a timing issue during the refresh of DAMON region directories, leading to a use-after-free vulnerability. This could result in memory corruption, potentially causing system instability or allowing for arbitrary code execution. Red Hat severity: Moderate — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9. Red Hat does not currently list a fixing RHSA for this CVE.
Medium [CVE-2026-64210] Fix unlocked writing to ICOSQ
A flaw was found in the Linux kernel's mlx5e driver, which manages Mellanox network adapters. This vulnerability occurs during network processing when CPU core assignments change, leading to a race condition where critical data structures (ICOSQ - Interrupt Coalescing Send Queue) can be updated without proper synchronization. A remote attacker could potentially exploit this timing issue to cause system instability or a kernel crash, resulting in a denial of service (DoS). Red Hat severity: Moderate — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-820. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9. Will not fix / out of support: Red Hat Enterprise Linux 6. Red Hat does not currently list a fixing RHSA for this CVE.