CVE-2023-53624
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2023
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
net/sched: sch_fq: fix integer overflow of "credit"
In the Linux kernel, the following vulnerability has been resolved: net/sched: sch_fq: fix integer overflow of "credit" if sch_fq is configured with "initial quantum" having values greater than INT_MAX, the first assignment of "credit" does signed integer overflow to a very negative value. In this situation, the syzkaller script provided by Cristoph triggers the CPU soft-lockup warning even with few sockets. It's not an infinite loop, but "credit" wasn't probably meant to be minus 2Gb for each new flow. Capping "initial quantum" to INT_MAX proved to fix the issue. v2: validation of "initial quantum" is done in fq_policy, instead of open coding in fq_change() _ suggested by Jakub Kicinski
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) |
|---|---|---|---|---|---|
| afe4fd062416b158a8a8538b23adc1930a9b88dc | affected | git | 4b8a05e3801661a0438fcd0cdef181030d966a5a | Unavailable | None listed |
| afe4fd062416b158a8a8538b23adc1930a9b88dc | affected | git | d0b43125ec892aeb1b03e5df5aab595097da225a | Unavailable | None listed |
| afe4fd062416b158a8a8538b23adc1930a9b88dc | affected | git | 4fbefeab88c6e79753a25099d455d3d59d2946b4 | Unavailable | None listed |
| afe4fd062416b158a8a8538b23adc1930a9b88dc | affected | git | 85f24cb2f10b2b0f2882e5786a09b4790bb3a0ad | Unavailable | None listed |
| afe4fd062416b158a8a8538b23adc1930a9b88dc | affected | git | 2322462d6f9ad4874f4e3c63df3b5cc00cb1acbd | Unavailable | None listed |
| afe4fd062416b158a8a8538b23adc1930a9b88dc | affected | git | 7041101ff6c3073fd8f2e99920f535b111c929cb | 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) |
|---|---|---|---|---|---|
| 3.12 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.12 | Unavailable | None listed |
| 5.10.180 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.111 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.28 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.2.15 | unaffected | semver | Unavailable | 6.2.* | None listed |
| 6.3.2 | unaffected | semver | Unavailable | 6.3.* | None listed |
| 6.4 | unaffected | original_commit_for_fix | Unavailable | * | None listed |