Medium 5.5Published May 8, 2026

CVE-2026-43289kexec: derive purgatory entry from symbol

Updated under an hour ago (Oct 27, 2026, 11:30 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: May 23, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from f368aed4827bd4276c0e3664fb2cb815a8d7caf3 before 027797595a108726f4a0a45d225f603b0ffbd22b; from d38e051ec6fd8650b139d9bc4b0b8b261953b263 before 1737d37ae1d2814e6cf0a1af87af3d41f0812b95; from 013027918a4efa807409fcb356009c117e4d181a before f736032c638a33a243e9126e617788f763d648f9; from 8652d44f466ad5772e7d1756e9457046189b0dfc before cfccd3b8c51bc57a8a6fcb2fd30453afae5bc0d2; from 8652d44f466ad5772e7d1756e9457046189b0dfc before 875355152b33436907c2a6d2ffad1431fa86c62b; 8652d44f466ad5772e7d1756e9457046189b0dfc builds before 36eb314184a0ae74dd42914b47d2b9fc43be8034; from 8652d44f466ad5772e7d1756e9457046189b0dfc before 5226570bd252cea2e805a161cb0f75c204c3108a; 8652d44f466ad5772e7d1756e9457046189b0dfc builds before 480e1d5c64bb14441f79f2eb9421d5e26f91ea3d; and 9 more ranges	CNA record
linux linux_kernel linux:linux_kernel	from 4.19.287 before 4.20; from 5.4.248 before 5.5; from 5.10.185 before 5.10.252; from 5.15.118 before 5.15.202; from 6.1.35 before 6.1.165; from 6.3.9 before 6.4; from 6.4.1 before 6.6.128; from 6.7 before 6.12.75; and 11 more ranges	NVD

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.