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]
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HAffected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= f368aed4827bd4276c0e3664fb2cb815a8d7caf3, < 027797595a108726f4a0a45d225f603b0ffbd22b; >= d38e051ec6fd8650b139d9bc4b0b8b261953b263, < 1737d37ae1d2814e6cf0a1af87af3d41f0812b95; >= 013027918a4efa807409fcb356009c117e4d181a, < f736032c638a33a243e9126e617788f763d648f9; >= 8652d44f466ad5772e7d1756e9457046189b0dfc, < cfccd3b8c51bc57a8a6fcb2fd30453afae5bc0d2; >= 8652d44f466ad5772e7d1756e9457046189b0dfc, < 875355152b33436907c2a6d2ffad1431fa86c62b; >= 8652d44f466ad5772e7d1756e9457046189b0dfc, < 36eb314184a0ae74dd42914b47d2b9fc43be8034; >= 8652d44f466ad5772e7d1756e9457046189b0dfc, < 5226570bd252cea2e805a161cb0f75c204c3108a; >= 8652d44f466ad5772e7d1756e9457046189b0dfc, < 480e1d5c64bb14441f79f2eb9421d5e26f91ea3d; 4947a0eb7d642b6048559857964966016ef3aa8b; b16bf76b382810257e3fb6278663a9d131b70197; cb1638618545182a01444b2b20a4ed6b9d2a8c8f; >= 5.10.185, < 5.10.252; >= 5.15.118, < 5.15.202; >= 6.1.35, < 6.1.165; >= 4.19.287, < 4.20; >= 5.4.248, < 5.5; >= 6.3.9, < 6.4 |
| Linux | Linux | 6.4 |
References
- https://git.kernel.org/stable/c/027797595a108726f4a0a45d225f603b0ffbd22bPatch
- https://git.kernel.org/stable/c/1737d37ae1d2814e6cf0a1af87af3d41f0812b95Patch
- https://git.kernel.org/stable/c/36eb314184a0ae74dd42914b47d2b9fc43be8034Patch
- https://git.kernel.org/stable/c/480e1d5c64bb14441f79f2eb9421d5e26f91ea3dPatch
- https://git.kernel.org/stable/c/5226570bd252cea2e805a161cb0f75c204c3108aPatch
- https://git.kernel.org/stable/c/875355152b33436907c2a6d2ffad1431fa86c62bPatch
- https://git.kernel.org/stable/c/cfccd3b8c51bc57a8a6fcb2fd30453afae5bc0d2Patch
- https://git.kernel.org/stable/c/f736032c638a33a243e9126e617788f763d648f9Patch
Timeline
- Published
- May 8, 2026
- Last modified
- Nov 11, 2026
- NVD status
- Analyzed