CVE-2026-43289

MEDIUM EPSS 2.4%
Published May 8, 20261mo ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published May 8, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: kexec: derive purgatory entry from symbol kexec_load_purgatory() derives image->start by locating e_entry inside an SHF_EXECINSTR section. If the purgatory object contains multiple executable sections with overlapping sh_addr, the entrypoint check can match more than once and trigger a WARN. Derive the entry section from the purgatory_start symbol when present and compute image->start from its final placement. Keep the existing e_entry fallback for purgatories that do not expose the symbol. WARNING: kernel/kexec_file.c:1009 at kexec_load_purgatory+0x395/0x3c0, CPU#10: kexec/1784 Call Trace: <TASK> bzImage64_load+0x133/0xa00 __do_sys_kexec_file_load+0x2b3/0x5c0 do_syscall_64+0x81/0x610 entry_SYSCALL_64_after_hwframe+0x76/0x7e [me@linux.beauty: move helper to avoid forward declaration, per Baoquan]

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
2.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 19

VendorProductVersionRange
linuxlinux_kernel*≥4.19.287  –  <4.20
linuxlinux_kernel*≥5.4.248  –  <5.5
linuxlinux_kernel*≥5.10.185  –  <5.10.252
linuxlinux_kernel*≥5.15.118  –  <5.15.202
linuxlinux_kernel*≥6.1.35  –  <6.1.165
linuxlinux_kernel*≥6.3.9  –  <6.4
linuxlinux_kernel*≥6.4.1  –  <6.6.128
linuxlinux_kernel*≥6.7  –  <6.12.75
linuxlinux_kernel*≥6.13  –  <6.18.16
linuxlinux_kernel*≥6.19  –  <6.19.6
linuxlinux_kernel6.4any
linuxlinux_kernel6.4any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 8

  • git.kernel.org https://git.kernel.org/stable/c/027797595a108726f4a0a45d225f603b0ffbd22b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/1737d37ae1d2814e6cf0a1af87af3d41f0812b95
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/36eb314184a0ae74dd42914b47d2b9fc43be8034
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/480e1d5c64bb14441f79f2eb9421d5e26f91ea3d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5226570bd252cea2e805a161cb0f75c204c3108a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/875355152b33436907c2a6d2ffad1431fa86c62b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cfccd3b8c51bc57a8a6fcb2fd30453afae5bc0d2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f736032c638a33a243e9126e617788f763d648f9
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/027797595a108726f4a0a45d225f603b0ffbd22b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/1737d37ae1d2814e6cf0a1af87af3d41f0812b95
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/36eb314184a0ae74dd42914b47d2b9fc43be8034
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/480e1d5c64bb14441f79f2eb9421d5e26f91ea3d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5226570bd252cea2e805a161cb0f75c204c3108a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/875355152b33436907c2a6d2ffad1431fa86c62b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cfccd3b8c51bc57a8a6fcb2fd30453afae5bc0d2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f736032c638a33a243e9126e617788f763d648f9
    Patch