Description (CNA)
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]
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected f368aed4827bd4276c0e3664fb2cb815a8d7caf3 before 027797595a108726f4a0a45d225f603b0ffbd22b; affected d38e051ec6fd8650b139d9bc4b0b8b261953b263 before 1737d37ae1d2814e6cf0a1af87af3d41f0812b95; affected 013027918a4efa807409fcb356009c117e4d181a before f736032c638a33a243e9126e617788f763d648f9; affected 8652d44f466ad5772e7d1756e9457046189b0dfc before cfccd3b8c51bc57a8a6fcb2fd30453afae5bc0d2; affected 8652d44f466ad5772e7d1756e9457046189b0dfc before 875355152b33436907c2a6d2ffad1431fa86c62b; affected 8652d44f466ad5772e7d1756e9457046189b0dfc before 36eb314184a0ae74dd42914b47d2b9fc43be8034; affected 8652d44f466ad5772e7d1756e9457046189b0dfc before 5226570bd252cea2e805a161cb0f75c204c3108a; affected 8652d44f466ad5772e7d1756e9457046189b0dfc before 480e1d5c64bb14441f79f2eb9421d5e26f91ea3d; affected 4947a0eb7d642b6048559857964966016ef3aa8b; affected b16bf76b382810257e3fb6278663a9d131b70197; affected cb1638618545182a01444b2b20a4ed6b9d2a8c8f; affected 5.10.185 before 5.10.252; affected 5.15.118 before 5.15.202; affected 6.1.35 before 6.1.165; affected 4.19.287 before 4.20; affected 5.4.248 before 5.5; affected 6.3.9 before 6.4 |
| Linux / Linux | affected 6.4; unaffected 0 before 6.4; unaffected 5.10.252 through 5.10.*; unaffected 5.15.202 through 5.15.*; unaffected 6.1.165 through 6.1.*; unaffected 6.6.128 through 6.6.*; unaffected 6.12.75 through 6.12.*; unaffected 6.18.16 through 6.18.*; unaffected 6.19.6 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/027797595a108726f4a0a45d225f603b0ffbd22b
- https://git.kernel.org/stable/c/1737d37ae1d2814e6cf0a1af87af3d41f0812b95
- https://git.kernel.org/stable/c/f736032c638a33a243e9126e617788f763d648f9
- https://git.kernel.org/stable/c/cfccd3b8c51bc57a8a6fcb2fd30453afae5bc0d2
- https://git.kernel.org/stable/c/875355152b33436907c2a6d2ffad1431fa86c62b
- https://git.kernel.org/stable/c/36eb314184a0ae74dd42914b47d2b9fc43be8034
- https://git.kernel.org/stable/c/5226570bd252cea2e805a161cb0f75c204c3108a
- https://git.kernel.org/stable/c/480e1d5c64bb14441f79f2eb9421d5e26f91ea3d