CVE-2026-89567
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
jbd2: bound shrinker scans by examined checkpoint buffers
In the Linux kernel, the following vulnerability has been resolved: jbd2: bound shrinker scans by examined checkpoint buffers The jbd2 shrinker currently accounts only checkpoint buffers that it successfully releases against nr_to_scan. Busy buffers therefore do not consume the scan budget. If a checkpoint transaction contains mostly busy buffers, the shrinker can scan its entire checkpoint list while holding journal->j_list_lock. Large checkpoint lists can result in excessive lock hold times and leave other CPUs spinning on j_list_lock, causing soft lockups or RCU stalls. Pass nr_to_scan into journal_shrink_one_cp_list() and decrement it for every buffer examined, including busy buffers. Pass NULL from checkpoint cleanup paths so their existing full-list behavior is preserved. This restores the scan-budget semantics that existed before journal_shrink_one_cp_list() was changed to always scan a complete checkpoint list.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| b98dba273a0e47dbfade89c9af73c5b012a4eabb | affected | git | 6b5366ba63a58819396045ab146bd37ff9e503c6 | Unavailable | None listed |
| b98dba273a0e47dbfade89c9af73c5b012a4eabb | affected | git | edf5fcd0469b7467bd5b37a79502c8d9c3257dbb | Unavailable | None listed |
| b98dba273a0e47dbfade89c9af73c5b012a4eabb | affected | git | 71c6b872c746465fa4b5def239cb296173ca8216 | Unavailable | None listed |
| b98dba273a0e47dbfade89c9af73c5b012a4eabb | affected | git | c2c0fb364685b8996c357d3b050394959b29d6e0 | Unavailable | None listed |
| b98dba273a0e47dbfade89c9af73c5b012a4eabb | affected | git | 15cb16496446b94e67f7abcb049b8e2c75cd3d02 | Unavailable | None listed |
| 9c31bb2684f8035beca0275349d19d679b679ffb | affected | git | Unavailable | Unavailable | None listed |
| 5fda50e262e65bd553ff777c4b280afd1495a18b | affected | git | Unavailable | Unavailable | None listed |
| 557fda9ed70ebf8eda2620ba3d746215285a1303 | affected | git | Unavailable | Unavailable | None listed |
| 5.15.129 | affected | semver | 5.16 | Unavailable | None listed |
| 6.1.50 | affected | semver | 6.2 | Unavailable | None listed |
| 6.4.13 | affected | semver | 6.5 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 6.5 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 6.5 | Unavailable | None listed |
| 6.6.160 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.109 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.50 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.4 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |