CVE-2026-45382
published 2026-07-21CVE-2026-45382: libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.19, `decoder_context::decode_slice_unit_tiles`…
PriorityP340medium6.9CVSS 4.0
AVNACLATNPRNUINVCNVINVALSCNSINSANEXCRXIRXARXMAVXMACXMATXMPRXMUIXMVCXMVIXMVAXMSCXMSIXMSAXSXAUXRXVXREXUX
EPSS
0.43%
36.0th percentile
libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.19, `decoder_context::decode_slice_unit_tiles` (libde265/decctx.cc:920) reads `pps.CtbAddrRStoTS[ctbAddrRS]` at line 966 where `ctbAddrRS = ctbY * ctbsWidth + ctbX` is computed from PPS-supplied `colBd[]`/`rowBd[]` arrays without validating the result against `CtbAddrRStoTS.size() == sps->PicSizeInCtbsY`. A malformed PPS that passes `set_derived_values` but encodes geometry inconsistent with the SPS produces a `ctbAddrRS` past the allocation, causing a 4-byte heap-buffer-overflow READ. Version 1.0.19 fixes the issue.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| strukturag | libde265 | < 1.0.19 | 1.0.19 |
| ubuntu | libde265 | — | — |
CVSS provenance
nvdv4.06.9MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vendor_ubuntu3.3LOW
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
Ubuntu
libde265 vulnerabilities
vendor_ubuntu·2026-07-20·CVSS 3.3
CVE-2026-45382 [LOW] libde265 vulnerabilities
Title: libde265 vulnerabilities
Summary: Several security issues were fixed in libde265.
It was discovered that libde265 did not properly manage memory under
certain circumstances. An attacker could possibly use this issue to
cause libde265 to crash, resulting in a denial of service. This issue
only affected Ubuntu 22.04 LTS. (CVE-2023-51792)
It was discovered that libde265 did not properly handle certain
malformed media files, leading to a heap buffer overflow. An attacker
could possibly use this issue to cause libde265 to crash, resulting in
a denial of service. (CVE-2024-38949, CVE-2024-38950)
It was discovered that libde265 did not properly handle certain
malformed input, leading to a segmentation fault. An attacker could
possibly use this issue to cause libde265 to crash, resultin
VulDB
strukturag libde265 up to 1.0.18 Decoder Context libde265/decctx.cc decode_slice_unit_tiles colBd/rowBd heap-based overflow (Nessus ID 348349)
vuldb·2026-09-21·CVSS 6.9
CVE-2026-45382 [MEDIUM] strukturag libde265 up to 1.0.18 Decoder Context libde265/decctx.cc decode_slice_unit_tiles colBd/rowBd heap-based overflow (Nessus ID 348349)
A vulnerability described as critical has been identified in strukturag libde265 up to 1.0.18. Impacted is the function decoder_context::decode_slice_unit_tiles of the file libde265/decctx.cc of the component Decoder Context. The manipulation of the argument colBd/rowBd results in heap-based buffer overflow.
This vulnerability was named CVE-2026-45382. The attack may be performed from remote. There is no available exploit.
Upgrading the affected component is recommended.
No detection rules found.
No public exploits indexed.
2026-07-21
Published