Linux: Out-of-bounds Read
CVE-2024-56597 is a high-severity out-of-bounds read vulnerability in Linux, with a CVSS 3.1 base score of 7.1 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. The record lists versions bbb24ce7f06ef9b7c05beb9340787cbe9fd3d08e, df7c76636952670b31bd6c12b3aed3c502122273, 6676034aa753aa448beb30dbd75630927ba7cd96 as the first without the flaw, so updating Linux to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.24% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Linux to bbb24ce7f06ef9b7c05beb9340787cbe9fd3d08e or df7c76636952670b31bd6c12b3aed3c502122273 or 6676034aa753aa448beb30dbd75630927ba7cd96 or 51a203470f502a64a3da8dcea51c4748e8267a6c, whichever matches your release line, or a later version.
- Update Linux Kernel to 5.4.287 or 5.10.231 or 5.15.174 or 6.1.120, whichever matches your release line, or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 up to, but not including, bbb24ce7f06ef9b7c05beb9340787cbe9fd3d08e; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 up to, but not including, df7c76636952670b31bd6c12b3aed3c502122273; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 up to, but not including, 6676034aa753aa448beb30dbd75630927ba7cd96; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 up to, but not including, 51a203470f502a64a3da8dcea51c4748e8267a6c; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 up to, but not including, c56245baf3fd1f79145dd7408e3ead034b74255c; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 up to, but not including, 52756a57e978e2706543a254f88f266cc6702f36; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 up to, but not including, a5f5e4698f8abbb25fe4959814093fb5bfa1aa9d; 2.6.12 | bbb24ce7f06ef9b7c05beb9340787cbe9fd3d08e, df7c76636952670b31bd6c12b3aed3c502122273, 6676034aa753aa448beb30dbd75630927ba7cd96, 51a203470f502a64a3da8dcea51c4748e8267a6c, c56245baf3fd1f79145dd7408e3ead034b74255c, 52756a57e978e2706543a254f88f266cc6702f36 |
| Linux | Linux Kernel | before 5.4.287; 5.5 up to, but not including, 5.10.231; 5.11 up to, but not including, 5.15.174; 5.16 up to, but not including, 6.1.120; 6.2 up to, but not including, 6.6.66; 6.7 up to, but not including, 6.12.5 | 5.4.287, 5.10.231, 5.15.174, 6.1.120, 6.6.66, 6.12.5 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- NoneNothing can be modified.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.8 | High | CNA |
| CVSS 3.1 | 7.1 | High | NVD |
Official description
In the Linux kernel, the following vulnerability has been resolved: jfs: fix shift-out-of-bounds in dbSplit When dmt_budmin is less than zero, it causes errors in the later stages. Added a check to return an error beforehand in dbAllocCtl itself.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Out-of-bounds Read
The product reads data past the end, or before the beginning, of the intended buffer.
How developers prevent this class of flaw
- Use a language that provides appropriate memory abstractions.
Timeline
- CVE record published.
- Record last changed materially (score, affected products, status or references).
References
Patches and release notes
- git.kernel.org/stable/c/51a203470f502a64a3da8dcea51c4748e8267a6c
- git.kernel.org/stable/c/52756a57e978e2706543a254f88f266cc6702f36
- git.kernel.org/stable/c/6676034aa753aa448beb30dbd75630927ba7cd96
- git.kernel.org/stable/c/a5f5e4698f8abbb25fe4959814093fb5bfa1aa9d
- git.kernel.org/stable/c/bbb24ce7f06ef9b7c05beb9340787cbe9fd3d08e
- git.kernel.org/stable/c/c56245baf3fd1f79145dd7408e3ead034b74255c
- git.kernel.org/stable/c/df7c76636952670b31bd6c12b3aed3c502122273
Other references
Recent Out-of-bounds Read vulnerabilities
- 7.1 High severity
- 7.1 High severity
- 7.1 High severity
- 7.1 High severity
- 7.1 High severity
Linux Kernel Out-of-Bounds Read Exploited
- 7.1 High severity
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