SUSE-SU-2026:3674-1: important: Security update for sccache

# Security update for sccache

Announcement ID: SUSE-SU-2026:3674-1  
Release Date: 2026-08-21T09:04:43Z  
Rating: important  
References:

  * bsc#1273881
  * bsc#1273884
  * bsc#1273886
  * bsc#1273888
  * bsc#1274146

  
Cross-References:

  * CVE-2026-25541
  * CVE-2026-66746
  * CVE-2026-66754
  * CVE-2026-67181
  * CVE-2026-67182

  
CVSS scores:

  * CVE-2026-25541 ( SUSE ):  8.7
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-25541 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-25541 ( NVD ):  5.5
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/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
  * CVE-2026-25541 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-66746 ( SUSE ):  5.3
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-66746 ( SUSE ):  5.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
  * CVE-2026-66746 ( NVD ):  5.3
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/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
  * CVE-2026-66746 ( NVD ):  5.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
  * CVE-2026-66754 ( SUSE ):  8.2
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-66754 ( SUSE ):  5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-66754 ( NVD ):  8.2
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/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
  * CVE-2026-66754 ( NVD ):  5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-67181 ( SUSE ):  6.3
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N
  * CVE-2026-67181 ( SUSE ):  5.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:L
  * CVE-2026-67181 ( NVD ):  6.3
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/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
  * CVE-2026-67181 ( NVD ):  5.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:L
  * CVE-2026-67182 ( SUSE ):  6.3
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-67182 ( SUSE ):  4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
  * CVE-2026-67182 ( NVD ):  6.9
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:H/SI:L/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
  * CVE-2026-67182 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:L

  
Affected Products:

  * Development Tools Module 15-SP7
  * openSUSE Leap 15.6
  * SUSE Linux Enterprise Desktop 15 SP7
  * SUSE Linux Enterprise Real Time 15 SP7
  * SUSE Linux Enterprise Server 15 SP6
  * SUSE Linux Enterprise Server 15 SP6 LTSS
  * SUSE Linux Enterprise Server 15 SP7
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6
  * SUSE Linux Enterprise Server for SAP Applications 15 SP7

  
  
An update that solves five vulnerabilities can now be installed.

## Description:

This update for sccache fixes the following issues:

  * CVE-2026-25541: bytes: integer overflow in 'BytesMut:reserve' can lead to
    undefined behavior and crashes (bsc#1274146).
  * CVE-2026-66746: rouille: HTTP Response Splitting via Unvalidated Response
    Header Values (bsc#1273881).
  * CVE-2026-66754: rouille: remove_prefix function that allows remote
    unauthenticated attackers to crash the server by sending a crafted percent-
    encoded URL (bsc#1273884).
  * CVE-2026-67181: rouille: HTTP Request Smuggling via Transfer-Encoding
    Desynchronization (bsc#1273886).
  * CVE-2026-67182: rouille: HTTP Request Smuggling Enables Front-End Access
    Control Bypass (bsc#1273888).

Changes for sccache:

  * Update to version 0.17.0~1:

  * Add experimental concurrent cache support

  * Release 0.17.0
  * tests: pin libc in the dist test crate
  * doc: clarify server-side outputs and drop 'recommended mode' claim
  * doc: document SCCACHE_CLIENT_SIDE env var
  * doc: document client-side and direct modes in Architecture.md
  * Fix description of Unix socket-based Redis connection
  * server: remove redundant async block in start_compile_task
  * server: simplify bind() request loops with ? instead of manual match arms
  * Add support for arg files in Rust (#2782)
  * feat: support S3 SSE-KMS with AWS-managed and customer-managed keys (#2770)
  * abort compile tasks and associated subprocesses when a client disconnects
  * treat -ivfsoverlay as a preprocessor-only argument
  * gcc: refine response-file tokenizer visibility and whitespace handling
  * integration: convert cmake 4.x modules XFAIL test to a passing test
  * gcc/clang: cache and distribute builds using quoted @response files
  * fix: Fix ToolchainPackager cfg gate to build on ppc64le/s390x
  * fix: make gcc diagnostics color output work the same as for rustc
  * implement client-side mode
  * split handle_compile_response so that the compilation result can be handled
    separately
  * implement IpcStorage -- Storage backend over IPC
  * extend wire protocol with storage RPCs
  * implement AddAssign for ServerStats and related types
  * add Storage::get_path for direct file access
  * implement get_raw/put_raw on MultiLevelStorage
  * add client_side_mode config flag (SCCACHE_CLIENT_SIDE)
  * Extract new_client_runtime() helper to DRY up client runtime creation
  * Clarify single-threaded runtime rationale comment (grammar)
  * fix: use single-threaded tokio runtime in sccache dist-client
  * fix: use single-threaded tokio runtime in sccache client
  * fix: handle disabled cache backend features in multilevel chain
  * Fix ldd output parsing: remove .exists() check that failed on systems where
    the symlink source path does not exist locally (e.g. aarch64)
  * Fix cfg guard for PanicToolchainPackager to also cover non-x86_64 Linux
    architectures (e.g. aarch64)

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".  
Alternatively you can run the command listed for your product:

  * Development Tools Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Development-Tools-15-SP7-2026-3674=1

  * SUSE Linux Enterprise Server 15 SP6 LTSS  
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-3674=1

  * openSUSE Leap 15.6  
    zypper in -t patch SUSE-2026-3674=1

  * SUSE Linux Enterprise Server for SAP Applications 15 SP6  
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-3674=1

## Package List:

  * openSUSE Leap 15.6 (aarch64 i586 ppc64le s390x x86_64)
    * sccache-debuginfo-0.17.0~1-150600.10.14.1
    * sccache-debugsource-0.17.0~1-150600.10.14.1
    * sccache-0.17.0~1-150600.10.14.1
  * Development Tools Module 15-SP7 (aarch64 ppc64le s390x x86_64)
    * sccache-debuginfo-0.17.0~1-150600.10.14.1
    * sccache-0.17.0~1-150600.10.14.1
  * SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 ppc64le s390x x86_64)
    * sccache-debuginfo-0.17.0~1-150600.10.14.1
    * sccache-0.17.0~1-150600.10.14.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6 (ppc64le x86_64)
    * sccache-debuginfo-0.17.0~1-150600.10.14.1
    * sccache-0.17.0~1-150600.10.14.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-25541.html
  * https://www.suse.com/security/cve/CVE-2026-66746.html
  * https://www.suse.com/security/cve/CVE-2026-66754.html
  * https://www.suse.com/security/cve/CVE-2026-67181.html
  * https://www.suse.com/security/cve/CVE-2026-67182.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1273881
  * https://bugzilla.suse.com/show_bug.cgi?id=1273884
  * https://bugzilla.suse.com/show_bug.cgi?id=1273886
  * https://bugzilla.suse.com/show_bug.cgi?id=1273888
  * https://bugzilla.suse.com/show_bug.cgi?id=1274146