Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: netfs: Fix read abandonment during retry Under certain circumstances, all the remaining subrequests from a read request will get abandoned during retry. The abandonment process expects the 'subreq' variable to be set to the place to start abandonment from, but it doesn't always have a useful value (it will be uninitialised on the first pass through the loop and it may point to a deleted subrequest on later passes). Fix the first jump to "abandon:" to set subreq to the start of the first subrequest expected to need retry (which, in this abandonment case, turned out unexpectedly to no longer have NEED_RETRY set). Also clear the subreq pointer after discarding superfluous retryable subrequests to cause an oops if we do try to access it.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected ee4cdf7ba857a894ad1650d6ab77669cbbfa329e before 3e5fd8f53b575ff2188f82071da19c977ca56c41; affected ee4cdf7ba857a894ad1650d6ab77669cbbfa329e before 8f2f2bd128a8d9edbc1e785760da54ada3df69b7; affected ee4cdf7ba857a894ad1650d6ab77669cbbfa329e before 7e57523490cd2efb52b1ea97f2e0a74c0fb634cd |
| Linux / Linux | affected 6.12; unaffected 0 before 6.12; unaffected 6.18.21 through 6.18.*; unaffected 6.19.11 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/3e5fd8f53b575ff2188f82071da19c977ca56c41
- https://git.kernel.org/stable/c/8f2f2bd128a8d9edbc1e785760da54ada3df69b7
- https://git.kernel.org/stable/c/7e57523490cd2efb52b1ea97f2e0a74c0fb634cd
ADP enrichment
No English description supplied.
No references supplied.