Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack_sip: fix OOB read in sip_skip_whitespace() sip_skip_whitespace() returns dptr unchanged when its own loop exhausts the buffer (dptr == limit), instead of NULL like its sibling sip_follow_continuation() returns on its own "no more data" path. ct_sip_get_header() only checks for NULL after calling it: dptr = sip_skip_whitespace(dptr, limit); if (dptr == NULL) break; if (*dptr != ':' || ++dptr >= limit) break; so a recognized header name followed only by spaces/tabs running to the exact end of the SIP payload, with no colon, makes the very next statement read one byte past the buffer. Make both "no more data" outcomes return NULL, matching the convention sip_follow_continuation() already uses and that both existing callers already check for.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
ea45f12a2766dae54e5426a23e8f4bafdbe2782e to < 9ae0a87e6f513293677fe286729fbae34d592215affectedea45f12a2766dae54e5426a23e8f4bafdbe2782e to < b6277622b7323000895b674321c9a1f060553188affectedea45f12a2766dae54e5426a23e8f4bafdbe2782e to < 0cfb96a118c5c6d46d7a1cfdfa18355ad734ca79affectedea45f12a2766dae54e5426a23e8f4bafdbe2782e to < c6beb08b1a9fdb96795816d8329ed75dd785d48eaffectedea45f12a2766dae54e5426a23e8f4bafdbe2782e to < 60c012b2d05e1558b0f30ea3f15a2c3ca2f24d94affectedea45f12a2766dae54e5426a23e8f4bafdbe2782e to < 4be8380e3af008f418f97992c06f23be649a430daffectedea45f12a2766dae54e5426a23e8f4bafdbe2782e to < 4a30aa2ba007db18210dd52219ecbd5528c03523affectedea45f12a2766dae54e5426a23e8f4bafdbe2782e to < e8f8231824b5815f57ce62cba116e511b10196deaffected
Linux Linux
Default version status: affected
2.6.26affected0 to < 2.6.26unaffected5.10.271 to ≤ 5.10.*unaffected5.15.222 to ≤ 5.15.*unaffected6.1.189 to ≤ 6.1.*unaffected6.6.158 to ≤ 6.6.*unaffected6.12.111 to ≤ 6.12.*unaffected6.18.53 to ≤ 6.18.*unaffected7.2.7 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/9ae0a87e6f513293677fe286729fbae34d592215 ↗
- https://git.kernel.org/stable/c/b6277622b7323000895b674321c9a1f060553188 ↗
- https://git.kernel.org/stable/c/0cfb96a118c5c6d46d7a1cfdfa18355ad734ca79 ↗
- https://git.kernel.org/stable/c/c6beb08b1a9fdb96795816d8329ed75dd785d48e ↗
- https://git.kernel.org/stable/c/60c012b2d05e1558b0f30ea3f15a2c3ca2f24d94 ↗
- https://git.kernel.org/stable/c/4be8380e3af008f418f97992c06f23be649a430d ↗
- https://git.kernel.org/stable/c/4a30aa2ba007db18210dd52219ecbd5528c03523 ↗
- https://git.kernel.org/stable/c/e8f8231824b5815f57ce62cba116e511b10196de ↗