CVE-2024-49933
"Linux Kernel Blk-iocost Out of Bound Shift Vulnerability"
Description
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.
INFO
Published Date :
Oct. 21, 2024, 6:15 p.m.
Last Modified :
Nov. 13, 2024, 3:09 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-49933.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2024-49933 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-49933 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Nov. 13, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://git.kernel.org/stable/c/1ab2cfe19700fb3dde4c7dfec392acff34db3120 No Types Assigned https://git.kernel.org/stable/c/1ab2cfe19700fb3dde4c7dfec392acff34db3120 Patch Changed Reference Type https://git.kernel.org/stable/c/1b120f151871eb47ce9f283c007af3f8ae1d990e No Types Assigned https://git.kernel.org/stable/c/1b120f151871eb47ce9f283c007af3f8ae1d990e Patch Changed Reference Type https://git.kernel.org/stable/c/1f61d509257d6a05763d05bf37943b35306522b1 No Types Assigned https://git.kernel.org/stable/c/1f61d509257d6a05763d05bf37943b35306522b1 Patch Changed Reference Type https://git.kernel.org/stable/c/364022095bdd4108efdaaa68576afa4712a5d085 No Types Assigned https://git.kernel.org/stable/c/364022095bdd4108efdaaa68576afa4712a5d085 Patch Changed Reference Type https://git.kernel.org/stable/c/59121bb38fdc01434ea3fe361ee02b59f036227f No Types Assigned https://git.kernel.org/stable/c/59121bb38fdc01434ea3fe361ee02b59f036227f Patch Changed Reference Type https://git.kernel.org/stable/c/9bce8005ec0dcb23a58300e8522fe4a31da606fa No Types Assigned https://git.kernel.org/stable/c/9bce8005ec0dcb23a58300e8522fe4a31da606fa Patch Changed Reference Type https://git.kernel.org/stable/c/f4ef9bef023d5c543cb0f3194ecacfd47ef590ec No Types Assigned https://git.kernel.org/stable/c/f4ef9bef023d5c543cb0f3194ecacfd47ef590ec Patch Added CWE NIST NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.10.227 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.168 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.113 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.55 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.10.14 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.11 up to (excluding) 6.11.3 -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Oct. 21, 2024
Action Type Old Value New Value Added Description 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. Added Reference kernel.org https://git.kernel.org/stable/c/1f61d509257d6a05763d05bf37943b35306522b1 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/f4ef9bef023d5c543cb0f3194ecacfd47ef590ec [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/59121bb38fdc01434ea3fe361ee02b59f036227f [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/1ab2cfe19700fb3dde4c7dfec392acff34db3120 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/1b120f151871eb47ce9f283c007af3f8ae1d990e [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/364022095bdd4108efdaaa68576afa4712a5d085 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/9bce8005ec0dcb23a58300e8522fe4a31da606fa [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-49933 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-49933
weaknesses.