CVE-2024-43890
In the Linux kernel, the following vulnerability has been resolved: tracing: Fix overflow in get_free_elt() "tracing_map->next_elt" in get_free_elt() is at risk of overflowing.
Does this matter?
Lower severity and a low EPSS score (0.26%). Track it; it rarely justifies an emergency change on its own.
Description
In the Linux kernel, the following vulnerability has been resolved: tracing: Fix overflow in get_free_elt() "tracing_map->next_elt" in get_free_elt() is at risk of overflowing. Once it overflows, new elements can still be inserted into the tracing_map even though the maximum number of elements (`max_elts`) has been reached. Continuing to insert elements after the overflow could result in the tracing_map containing "tracing_map->max_size" elements, leaving no empty entries. If any attempt is made to insert an element into a full tracing_map using `__tracing_map_insert()`, it will cause an infinite loop with preemption disabled, leading to a CPU hang problem. Fix this by preventing any further increments to "tracing_map->next_elt" once it reaches "tracing_map->max_elt".
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.26% probability · 17th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-190
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/236bb4690773ab6869b40bedc7bc8d889e36f9d6Patch
- https://git.kernel.org/stable/c/302ceb625d7b990db205a15e371f9a71238de91cPatch
- https://git.kernel.org/stable/c/788ea62499b3c18541fd6d621964d8fafbc4aec5Patch
- https://git.kernel.org/stable/c/a172c7b22bc2feaf489cfc6d6865f7237134fdf8Patch
- https://git.kernel.org/stable/c/bcf86c01ca4676316557dd482c8416ece8c2e143Patch
- https://git.kernel.org/stable/c/cd10d186a5409a1fe6e976df82858e9773a698daPatch
- https://git.kernel.org/stable/c/d3e4dbc2858fe85d1dbd2e72a9fc5dea988b5c18Patch
- https://git.kernel.org/stable/c/eb223bf01e688dfe37e813c8988ee11c8c9f8d0aPatch
- https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://cert-portal.siemens.com/productcert/html/ssa-355557.html
- https://cert-portal.siemens.com/productcert/html/ssa-613116.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.