CVE-2026-43289 (GCVE-0-2026-43289)

Vulnerability from cvelistv5 – Published: 2026-05-08 13:11 – Updated: 2026-05-23 16:06
VLAI
Title
kexec: derive purgatory entry from symbol
Summary
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]
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: f368aed4827bd4276c0e3664fb2cb815a8d7caf3 , < 027797595a108726f4a0a45d225f603b0ffbd22b (git)
Affected: d38e051ec6fd8650b139d9bc4b0b8b261953b263 , < 1737d37ae1d2814e6cf0a1af87af3d41f0812b95 (git)
Affected: 013027918a4efa807409fcb356009c117e4d181a , < f736032c638a33a243e9126e617788f763d648f9 (git)
Affected: 8652d44f466ad5772e7d1756e9457046189b0dfc , < cfccd3b8c51bc57a8a6fcb2fd30453afae5bc0d2 (git)
Affected: 8652d44f466ad5772e7d1756e9457046189b0dfc , < 875355152b33436907c2a6d2ffad1431fa86c62b (git)
Affected: 8652d44f466ad5772e7d1756e9457046189b0dfc , < 36eb314184a0ae74dd42914b47d2b9fc43be8034 (git)
Affected: 8652d44f466ad5772e7d1756e9457046189b0dfc , < 5226570bd252cea2e805a161cb0f75c204c3108a (git)
Affected: 8652d44f466ad5772e7d1756e9457046189b0dfc , < 480e1d5c64bb14441f79f2eb9421d5e26f91ea3d (git)
Affected: 4947a0eb7d642b6048559857964966016ef3aa8b (git)
Affected: b16bf76b382810257e3fb6278663a9d131b70197 (git)
Affected: cb1638618545182a01444b2b20a4ed6b9d2a8c8f (git)
Affected: 5.10.185 , < 5.10.252 (semver)
Affected: 5.15.118 , < 5.15.202 (semver)
Affected: 6.1.35 , < 6.1.165 (semver)
Affected: 4.19.287 , < 4.20 (semver)
Affected: 5.4.248 , < 5.5 (semver)
Affected: 6.3.9 , < 6.4 (semver)
Create a notification for this product.
Linux Linux Affected: 6.4
Unaffected: 0 , < 6.4 (semver)
Unaffected: 5.10.252 , ≤ 5.10.* (semver)
Unaffected: 5.15.202 , ≤ 5.15.* (semver)
Unaffected: 6.1.165 , ≤ 6.1.* (semver)
Unaffected: 6.6.128 , ≤ 6.6.* (semver)
Unaffected: 6.12.75 , ≤ 6.12.* (semver)
Unaffected: 6.18.16 , ≤ 6.18.* (semver)
Unaffected: 6.19.6 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
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Keep the existing e_entry\\nfallback for purgatories that do not expose the symbol.\\n\\nWARNING: kernel/kexec_file.c:1009 at kexec_load_purgatory+0x395/0x3c0, CPU#10: kexec/1784\\nCall Trace:\\n \u003cTASK\u003e\\n bzImage64_load+0x133/0xa00\\n __do_sys_kexec_file_load+0x2b3/0x5c0\\n do_syscall_64+0x81/0x610\\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n\\n[me@linux.beauty: move helper to avoid forward declaration, per 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\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/875355152b33436907c2a6d2ffad1431fa86c62b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/cfccd3b8c51bc57a8a6fcb2fd30453afae5bc0d2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f736032c638a33a243e9126e617788f763d648f9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


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Tags
Taxonomy of the tags.




Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.