An update for aom is now available for openEuler-24.03-LTS-SP1 Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2026-2866 Final 1.0 1.0 2026-07-06 Initial 2026-07-06 2026-07-06 openEuler SA Tool V1.0 2026-07-06 aom security update An update for aom is now available for openEuler-24.03-LTS-SP1 The Alliance for Open Media’s focus is to deliver a next-generation video format that is: Security Fix(es): An arbitrary address write vulnerability was found in libaom, the reference AV1 codec implementation. A missing bounds check in the SVC (Scalable Video Coding) layer ID control function allows an attacker to inject an arbitrary pointer into the cyclic refresh map field via crafted image pixel values. The encoder then writes approximately 1,200 bytes at the attacker-controlled address. This is fully deterministic and does not require a separate information leak. An attacker who can supply frames to a network-facing libaom encoder with SVC enabled could exploit this for denial of service or potential code execution.(CVE-2026-56209) A heap-buffer-overflow read vulnerability was found in libaom, the reference AV1 codec implementation. A missing bounds check in the SVC (Scalable Video Coding) layer ID control function allows setting a spatial_layer_id exceeding the configured number of layers. This causes an out-of-bounds heap read of approximately 40,728 bytes when computing a layer context array index. An attacker who can influence SVC encoder parameters in a network-facing service could exploit this for information disclosure (heap content leak) or denial of service (segmentation fault from hitting unmapped memory).(CVE-2026-56210) A remote code execution vulnerability was found in libaom, the reference AV1 codec implementation. Insufficient bounds validation in the AV1 encoder's SVC (Scalable Video Coding) layer ID control allows an attacker to supply crafted video frame pixels that overlap with internal encoder layer context structures. In fork-based video processing services, an attacker can use this to hijack the cyclic refresh map pointer, brute-force the process base address via a crash oracle, and redirect control flow to achieve arbitrary command execution. Exploitation requires the target service to use libaom with SVC encoding enabled and accept attacker-supplied video frames.(CVE-2026-56211) An update for aom is now available for openEuler-24.03-LTS-SP1/openEuler-24.03-LTS-SP4. openEuler Security has rated this update as having a security impact of high. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section. High aom https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2866 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-56209 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-56210 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-56211 https://nvd.nist.gov/vuln/detail/CVE-2026-56209 https://nvd.nist.gov/vuln/detail/CVE-2026-56210 https://nvd.nist.gov/vuln/detail/CVE-2026-56211 openEuler-24.03-LTS-SP1 aom-3.8.0-6.oe2403sp1.src.rpm aom-3.8.0-6.oe2403sp1.x86_64.rpm aom-debuginfo-3.8.0-6.oe2403sp1.x86_64.rpm aom-debugsource-3.8.0-6.oe2403sp1.x86_64.rpm libaom-3.8.0-6.oe2403sp1.x86_64.rpm libaom-devel-3.8.0-6.oe2403sp1.x86_64.rpm aom-3.8.0-6.oe2403sp1.aarch64.rpm aom-debuginfo-3.8.0-6.oe2403sp1.aarch64.rpm aom-debugsource-3.8.0-6.oe2403sp1.aarch64.rpm libaom-3.8.0-6.oe2403sp1.aarch64.rpm libaom-devel-3.8.0-6.oe2403sp1.aarch64.rpm An arbitrary address write vulnerability was found in libaom, the reference AV1 codec implementation. A missing bounds check in the SVC (Scalable Video Coding) layer ID control function allows an attacker to inject an arbitrary pointer into the cyclic refresh map field via crafted image pixel values. The encoder then writes approximately 1,200 bytes at the attacker-controlled address. This is fully deterministic and does not require a separate information leak. An attacker who can supply frames to a network-facing libaom encoder with SVC enabled could exploit this for denial of service or potential code execution. 2026-07-06 CVE-2026-56209 openEuler-24.03-LTS-SP1 High 7.1 AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H aom security update 2026-07-06 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2866 A heap-buffer-overflow read vulnerability was found in libaom, the reference AV1 codec implementation. A missing bounds check in the SVC (Scalable Video Coding) layer ID control function allows setting a spatial_layer_id exceeding the configured number of layers. This causes an out-of-bounds heap read of approximately 40,728 bytes when computing a layer context array index. An attacker who can influence SVC encoder parameters in a network-facing service could exploit this for information disclosure (heap content leak) or denial of service (segmentation fault from hitting unmapped memory). 2026-07-06 CVE-2026-56210 openEuler-24.03-LTS-SP1 High 7.1 AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H aom security update 2026-07-06 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2866 A remote code execution vulnerability was found in libaom, the reference AV1 codec implementation. Insufficient bounds validation in the AV1 encoder's SVC (Scalable Video Coding) layer ID control allows an attacker to supply crafted video frame pixels that overlap with internal encoder layer context structures. In fork-based video processing services, an attacker can use this to hijack the cyclic refresh map pointer, brute-force the process base address via a crash oracle, and redirect control flow to achieve arbitrary command execution. Exploitation requires the target service to use libaom with SVC encoding enabled and accept attacker-supplied video frames. 2026-07-06 CVE-2026-56211 openEuler-24.03-LTS-SP1 High 7.1 AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:H aom security update 2026-07-06 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2866