Answer in brief
CVE-2026-52958 records a Critical severity (CVSS 9.1) vulnerability in libceph: Fix potential out-of-bounds access in osdmap_decode(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2026-52958 records a Critical severity (CVSS 9.1) vulnerability in libceph: Fix potential out-of-bounds access in osdmap_decode(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=dcbc919a5dc8c2629684a113a90c0b6fe10c3462 <36a79759a288961b1ff28a68ec2d1f56f6848098 || >=dcbc919a5dc8c2629684a113a90c0b6fe10c3462 <3f2575bb7f955d42569d96c3e04fa958a0dcf4b4 || >=dcbc919a5dc8c2629684a113a90c0b6fe10c3462 <8713bbc4b2b9ad78f803978e54b7e49dd21bd9be || >=dcbc919a5dc8c2629684a113a90c0b6fe10c3462 <0d2dd7e6bb74fd7712aa73457a4a821906c6863a || >=dcbc919a5dc8c2629684a113a90c0b6fe10c3462 <e7187f33c02488697ec0d01d82bf7a3f8deaba8f || >=dcbc919a5dc8c2629684a113a90c0b6fe10c3462 <48df98d12b15360cd56af5c1f460307b340c1197 || >=dcbc919a5dc8c2629684a113a90c0b6fe10c3462 <ee933694645dac062d65fc2743f92bc06fa0db6b || >=dcbc919a5dc8c2629684a113a90c0b6fe10c3462 <35d0ed82d03e5ee77ea4f31f20e29562a7721649 | 36a79759a288961b1ff28a68ec2d1f56f6848098, 3f2575bb7f955d42569d96c3e04fa958a0dcf4b4, 8713bbc4b2b9ad78f803978e54b7e49dd21bd9be, 0d2dd7e6bb74fd7712aa73457a4a821906c6863a, e7187f33c02488697ec0d01d82bf7a3f8deaba8f, 48df98d12b15360cd56af5c1f460307b340c1197, ee933694645dac062d65fc2743f92bc06fa0db6b, 35d0ed82d03e5ee77ea4f31f20e29562a7721649 |
| Linux/Linuxgeneric | 5.3 | Not reported |
Published upstream
Jun 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 24, 2026
In the Linux kernel, the following vulnerability has been resolved: libceph: Fix potential out-of-bounds access in osdmap_decode() When decoding osd_state and osd_weight from an incoming osdmap in osdmap_decode(), both are decoded for each osd, i.e., map->max_osd times. The ceph_decode_need() check only accounts for sizeof(*map->osd_weight) once. This can potentially result in an out-of-bounds memory access if the incoming message is corrupted such that the max_osd value exceeds the actual content of the osdmap message. This patch fixes the issue by changing the corresponding part in the ceph_decode_need() check to account for map->max_osd*sizeof(*map->osd_weight).
Quoted source text, attributed separately from HOL analysis.
CVSS is 9.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=dcbc919a5dc8c2629684a113a90c0b6fe10c3462 <36a79759a288961b1ff28a68ec2d1f56f6848098 || >=dcbc919a5dc8c2629684a113a90c0b6fe10c3462 <3f2575bb7f955d42569d96c3e04fa958a0dcf4b4 || >=dcbc919a5dc8c2629684a113a90c0b6fe10c3462 <8713bbc4b2b9ad78f803978e54b7e49dd21bd9be || >=dcbc919a5dc8c2629684a113a90c0b6fe10c3462 <0d2dd7e6bb74fd7712aa73457a4a821906c6863a || >=dcbc919a5dc8c2629684a113a90c0b6fe10c3462 <e7187f33c02488697ec0d01d82bf7a3f8deaba8f || >=dcbc919a5dc8c2629684a113a90c0b6fe10c3462 <48df98d12b15360cd56af5c1f460307b340c1197 || >=dcbc919a5dc8c2629684a113a90c0b6fe10c3462 <ee933694645dac062d65fc2743f92bc06fa0db6b || >=dcbc919a5dc8c2629684a113a90c0b6fe10c3462 <35d0ed82d03e5ee77ea4f31f20e29562a7721649 | 36a79759a288961b1ff28a68ec2d1f56f6848098, 3f2575bb7f955d42569d96c3e04fa958a0dcf4b4, 8713bbc4b2b9ad78f803978e54b7e49dd21bd9be, 0d2dd7e6bb74fd7712aa73457a4a821906c6863a, e7187f33c02488697ec0d01d82bf7a3f8deaba8f, 48df98d12b15360cd56af5c1f460307b340c1197, ee933694645dac062d65fc2743f92bc06fa0db6b, 35d0ed82d03e5ee77ea4f31f20e29562a7721649 |
| Linux/Linuxgeneric | 5.3 | Not reported |
Published upstream
Jun 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 24, 2026
In the Linux kernel, the following vulnerability has been resolved: libceph: Fix potential out-of-bounds access in osdmap_decode() When decoding osd_state and osd_weight from an incoming osdmap in osdmap_decode(), both are decoded for each osd, i.e., map->max_osd times. The ceph_decode_need() check only accounts for sizeof(*map->osd_weight) once. This can potentially result in an out-of-bounds memory access if the incoming message is corrupted such that the max_osd value exceeds the actual content of the osdmap message. This patch fixes the issue by changing the corresponding part in the ceph_decode_need() check to account for map->max_osd*sizeof(*map->osd_weight).
Quoted source text, attributed separately from HOL analysis.