kexec: derive purgatory entry from symbol
Summary
| CVE | CVE-2026-43289 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-05-08 14:16:35 UTC |
| Updated | 2026-05-08 14:16:35 UTC |
| 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 [[email protected]: move helper to avoid forward declaration, per Baoquan] |
Risk And Classification
EPSS: 0.000240000 probability, percentile 0.070210000 (date 2026-05-11)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected f368aed4827bd4276c0e3664fb2cb815a8d7caf3 027797595a108726f4a0a45d225f603b0ffbd22b git | Not specified |
| CNA | Linux | Linux | affected d38e051ec6fd8650b139d9bc4b0b8b261953b263 1737d37ae1d2814e6cf0a1af87af3d41f0812b95 git | Not specified |
| CNA | Linux | Linux | affected 013027918a4efa807409fcb356009c117e4d181a f736032c638a33a243e9126e617788f763d648f9 git | Not specified |
| CNA | Linux | Linux | affected 8652d44f466ad5772e7d1756e9457046189b0dfc cfccd3b8c51bc57a8a6fcb2fd30453afae5bc0d2 git | Not specified |
| CNA | Linux | Linux | affected 8652d44f466ad5772e7d1756e9457046189b0dfc 875355152b33436907c2a6d2ffad1431fa86c62b git | Not specified |
| CNA | Linux | Linux | affected 8652d44f466ad5772e7d1756e9457046189b0dfc 36eb314184a0ae74dd42914b47d2b9fc43be8034 git | Not specified |
| CNA | Linux | Linux | affected 8652d44f466ad5772e7d1756e9457046189b0dfc 5226570bd252cea2e805a161cb0f75c204c3108a git | Not specified |
| CNA | Linux | Linux | affected 8652d44f466ad5772e7d1756e9457046189b0dfc 480e1d5c64bb14441f79f2eb9421d5e26f91ea3d git | Not specified |
| CNA | Linux | Linux | affected 4947a0eb7d642b6048559857964966016ef3aa8b git | Not specified |
| CNA | Linux | Linux | affected b16bf76b382810257e3fb6278663a9d131b70197 git | Not specified |
| CNA | Linux | Linux | affected cb1638618545182a01444b2b20a4ed6b9d2a8c8f git | Not specified |
| CNA | Linux | Linux | affected 6.4 | Not specified |
| CNA | Linux | Linux | unaffected 6.4 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.252 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.202 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.165 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.128 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.75 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.16 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.19.6 6.19.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.0 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/5226570bd252cea2e805a161cb0f75c204c3108a | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/875355152b33436907c2a6d2ffad1431fa86c62b | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/36eb314184a0ae74dd42914b47d2b9fc43be8034 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/480e1d5c64bb14441f79f2eb9421d5e26f91ea3d | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/1737d37ae1d2814e6cf0a1af87af3d41f0812b95 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/027797595a108726f4a0a45d225f603b0ffbd22b | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/cfccd3b8c51bc57a8a6fcb2fd30453afae5bc0d2 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/f736032c638a33a243e9126e617788f763d648f9 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.