@@ -222,3 +222,12 @@ CVE_STATUS[CVE-2021-3864] = "unpatched: Proposed fixes were not merged upstream"
# Fix https://git.kernel.org/linus/d860d1faa6b2ce3becfdb8b0c2b048ad31800061
# Fix https://git.kernel.org/linus/da9c9c877597170b929a6121a68dcd3dd9a80f45
CVE_STATUS[CVE-2022-1247] = "fixed-version: Fixed from version 6.17"
+
+# Triaged August 2026 - "EntryBleed", discussed with the kernel security team
+# but no fix appears to have been published since then. Debian says "Ignored
+# upstream and KASLR is not expected to be resistant to local attacks", fix
+# deferred in Ubuntu.
+# https://www.openwall.com/lists/oss-security/2022/12/16/3
+# https://security-tracker.debian.org/tracker/CVE-2022-4543
+# https://ubuntu.com/security/CVE-2022-4543
+CVE_STATUS[CVE-2022-4543] = "unpatched: No fix has been proposed"
KPTI clones the kernel entry text into the user page tables at its KASLR-slid address and, on CPUs with PGE, sets the global bit on those entries. The translation survives the CR3 write on kernel exit, and a local attacker can time prefetch instructions across the kernel range to recover the KASLR base in under a second. Disclosure and write-up: https://www.openwall.com/lists/oss-security/2022/12/16/3 https://www.willsroot.io/2022/12/entrybleed.html The disclosure states that after discussion with security@kernel.org and linux-distros "a fix for this is currently not available", and none has appeared since; arch/x86/mm/pti.c still clones the entry text and sets _PAGE_GLOBAL on the cloned mapping. Debian notes "Ignored upstream and KASLR is not expected to be resistant to local attacks"; Ubuntu has the fix deferred since 2023-01-10: https://security-tracker.debian.org/tracker/CVE-2022-4543 https://ubuntu.com/security/CVE-2022-4543 CC: Paul Barker <paul@pbarker.dev> AI-Generated: Uses Claude (claude-opus-5) Signed-off-by: Junjie Cao <junjie.cao@linux.dev> --- v4: - use the review's comment and status wording; drop the cpu_entry_area commit reference - tighten the mechanism wording and the timing claim to match the cited sources v3: https://lore.kernel.org/openembedded-core/20260812072842.1176341-1-junjie.cao@linux.dev/ meta/recipes-kernel/linux/cve-exclusion.inc | 9 +++++++++ 1 file changed, 9 insertions(+)