CVE-2024-49933
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2024
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
blk_iocost: fix more out of bound shifts
In the Linux kernel, the following vulnerability has been resolved: blk_iocost: fix more out of bound shifts Recently running UBSAN caught few out of bound shifts in the ioc_forgive_debts() function: UBSAN: shift-out-of-bounds in block/blk-iocost.c:2142:38 shift exponent 80 is too large for 64-bit type 'u64' (aka 'unsigned long long') ... UBSAN: shift-out-of-bounds in block/blk-iocost.c:2144:30 shift exponent 80 is too large for 64-bit type 'u64' (aka 'unsigned long long') ... Call Trace: <IRQ> dump_stack_lvl+0xca/0x130 __ubsan_handle_shift_out_of_bounds+0x22c/0x280 ? __lock_acquire+0x6441/0x7c10 ioc_timer_fn+0x6cec/0x7750 ? blk_iocost_init+0x720/0x720 ? call_timer_fn+0x5d/0x470 call_timer_fn+0xfa/0x470 ? blk_iocost_init+0x720/0x720 __run_timer_base+0x519/0x700 ... Actual impact of this issue was not identified but I propose to fix the undefined behaviour. The proposed fix to prevent those out of bound shifts consist of precalculating exponent before using it the shift operations by taking min value from the actual exponent and maximum possible number of bits.
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) |
|---|---|---|---|---|---|
| bec02dbbafad534674309f8b948094900f456797 | affected | git | 1f61d509257d6a05763d05bf37943b35306522b1 | Unavailable | None listed |
| bec02dbbafad534674309f8b948094900f456797 | affected | git | f4ef9bef023d5c543cb0f3194ecacfd47ef590ec | Unavailable | None listed |
| bec02dbbafad534674309f8b948094900f456797 | affected | git | 59121bb38fdc01434ea3fe361ee02b59f036227f | Unavailable | None listed |
| bec02dbbafad534674309f8b948094900f456797 | affected | git | 1ab2cfe19700fb3dde4c7dfec392acff34db3120 | Unavailable | None listed |
| bec02dbbafad534674309f8b948094900f456797 | affected | git | 1b120f151871eb47ce9f283c007af3f8ae1d990e | Unavailable | None listed |
| bec02dbbafad534674309f8b948094900f456797 | affected | git | 364022095bdd4108efdaaa68576afa4712a5d085 | Unavailable | None listed |
| bec02dbbafad534674309f8b948094900f456797 | affected | git | 9bce8005ec0dcb23a58300e8522fe4a31da606fa | 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) |
|---|---|---|---|---|---|
| 5.10 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.10 | Unavailable | None listed |
| 5.10.227 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.168 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.113 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.55 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.10.14 | unaffected | semver | Unavailable | 6.10.* | None listed |
| 6.11.3 | unaffected | semver | Unavailable | 6.11.* | None listed |
| 6.12 | unaffected | original_commit_for_fix | Unavailable | * | None listed |