From: Deepak Rathore <[email protected]> This patch applies the upstream QEMU fix for CVE-2024-6519. The upstream fix commit is referenced in [1], the Debian tracker fix status is referenced in [2], and the public security advisory is referenced in [3].
[1] https://gitlab.com/qemu-project/qemu/-/commit/4862d2c95104d9fd0430cc003c205094f8ada1f9 [2] https://security-tracker.debian.org/tracker/CVE-2024-6519 [3] https://www.zerodayinitiative.com/advisories/ZDI-24-1382/ Signed-off-by: Deepak Rathore <[email protected]> diff --git a/meta/recipes-devtools/qemu/qemu.inc b/meta/recipes-devtools/qemu/qemu.inc index 5f30416a48..4b6c2252b7 100644 --- a/meta/recipes-devtools/qemu/qemu.inc +++ b/meta/recipes-devtools/qemu/qemu.inc @@ -36,6 +36,7 @@ SRC_URI = "https://download.qemu.org/${BPN}-${PV}.tar.xz \ file://0001-accel-tcg-Fix-iotlb_to_section-for-different-Address.patch \ file://qemu-guest-agent.init \ file://qemu-guest-agent.udev \ + file://CVE-2024-6519.patch \ " # file index at download.qemu.org isn't reliable: https://gitlab.com/qemu-project/qemu-web/-/issues/9 UPSTREAM_CHECK_URI = "https://www.qemu.org"; diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2024-6519.patch b/meta/recipes-devtools/qemu/qemu/CVE-2024-6519.patch new file mode 100644 index 0000000000..9bd36bed2c --- /dev/null +++ b/meta/recipes-devtools/qemu/qemu/CVE-2024-6519.patch @@ -0,0 +1,53 @@ +From 56cd5218a61d7365e501b57d8d79330ffa696031 Mon Sep 17 00:00:00 2001 +From: Paolo Bonzini <[email protected]> +Date: Fri, 27 Mar 2026 17:37:31 +0100 +Subject: [PATCH] lsi53c895a: keep a reference to the device while SCRIPTS + execute + +SCRIPTS execution can trigger PCI device unplug and consequently +a use-after-free after the unplug returns. Avoid this by keeping +the device alive. + +Resolves: https://gitlab.com/qemu-project/qemu/-/work_items/3090 + +CVE: CVE-2024-6519 +Upstream-Status: Backport [https://gitlab.com/qemu-project/qemu/-/commit/4862d2c95104d9fd0430cc003c205094f8ada1f9] + +Cc: [email protected] +Signed-off-by: Paolo Bonzini <[email protected]> +(cherry picked from commit 4862d2c95104d9fd0430cc003c205094f8ada1f9) +Signed-off-by: Deepak Rathore <[email protected]> +--- + hw/scsi/lsi53c895a.c | 3 +++ + 1 file changed, 3 insertions(+) + +diff --git a/hw/scsi/lsi53c895a.c b/hw/scsi/lsi53c895a.c +index 9ea4aa0a853..2cc7e945e16 100644 +--- a/hw/scsi/lsi53c895a.c ++++ b/hw/scsi/lsi53c895a.c +@@ -1163,6 +1163,7 @@ static void lsi_execute_script(LSIState *s) + s->waiting = LSI_NOWAIT; + } + ++ object_ref(s); + reentrancy_level++; + + s->istat1 |= LSI_ISTAT1_SRUN; +@@ -1182,6 +1183,7 @@ again: + s->waiting = LSI_WAIT_SCRIPTS; + lsi_scripts_timer_start(s); + reentrancy_level--; ++ object_unref(s); + return; + } + insn = read_dword(s, s->dsp); +@@ -1630,6 +1632,7 @@ again: + trace_lsi_execute_script_stop(); + + reentrancy_level--; ++ object_unref(s); + } + + static uint8_t lsi_reg_readb(LSIState *s, int offset) +-- +2.35.6 -- 2.35.6
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