ghsa-gjcc-jpc7-jff7
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
drm/v3d: Assign job pointer to NULL before signaling the fence
In commit e4b5ccd392b9 ("drm/v3d: Ensure job pointer is set to NULL after job completion"), we introduced a change to assign the job pointer to NULL after completing a job, indicating job completion.
However, this approach created a race condition between the DRM
scheduler workqueue and the IRQ execution thread. As soon as the fence is
signaled in the IRQ execution thread, a new job starts to be executed.
This results in a race condition where the IRQ execution thread sets the
job pointer to NULL simultaneously as the run_job() function assigns
a new job to the pointer.
This race condition can lead to a NULL pointer dereference if the IRQ
execution thread sets the job pointer to NULL after run_job() assigns
it to the new job. When the new job completes and the GPU emits an
interrupt, v3d_irq() is triggered, potentially causing a crash.
[ 466.310099] Unable to handle kernel NULL pointer dereference at virtual address 00000000000000c0 [ 466.318928] Mem abort info: [ 466.321723] ESR = 0x0000000096000005 [ 466.325479] EC = 0x25: DABT (current EL), IL = 32 bits [ 466.330807] SET = 0, FnV = 0 [ 466.333864] EA = 0, S1PTW = 0 [ 466.337010] FSC = 0x05: level 1 translation fault [ 466.341900] Data abort info: [ 466.344783] ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000 [ 466.350285] CM = 0, WnR = 0, TnD = 0, TagAccess = 0 [ 466.355350] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [ 466.360677] user pgtable: 4k pages, 39-bit VAs, pgdp=0000000089772000 [ 466.367140] [00000000000000c0] pgd=0000000000000000, p4d=0000000000000000, pud=0000000000000000 [ 466.375875] Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP [ 466.382163] Modules linked in: rfcomm snd_seq_dummy snd_hrtimer snd_seq snd_seq_device algif_hash algif_skcipher af_alg bnep binfmt_misc vc4 snd_soc_hdmi_codec drm_display_helper cec brcmfmac_wcc spidev rpivid_hevc(C) drm_client_lib brcmfmac hci_uart drm_dma_helper pisp_be btbcm brcmutil snd_soc_core aes_ce_blk v4l2_mem2mem bluetooth aes_ce_cipher snd_compress videobuf2_dma_contig ghash_ce cfg80211 gf128mul snd_pcm_dmaengine videobuf2_memops ecdh_generic sha2_ce ecc videobuf2_v4l2 snd_pcm v3d sha256_arm64 rfkill videodev snd_timer sha1_ce libaes gpu_sched snd videobuf2_common sha1_generic drm_shmem_helper mc rp1_pio drm_kms_helper raspberrypi_hwmon spi_bcm2835 gpio_keys i2c_brcmstb rp1 raspberrypi_gpiomem rp1_mailbox rp1_adc nvmem_rmem uio_pdrv_genirq uio i2c_dev drm ledtrig_pattern drm_panel_orientation_quirks backlight fuse dm_mod ip_tables x_tables ipv6 [ 466.458429] CPU: 0 UID: 1000 PID: 2008 Comm: chromium Tainted: G C 6.13.0-v8+ #18 [ 466.467336] Tainted: [C]=CRAP [ 466.470306] Hardware name: Raspberry Pi 5 Model B Rev 1.0 (DT) [ 466.476157] pstate: 404000c9 (nZcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 466.483143] pc : v3d_irq+0x118/0x2e0 [v3d] [ 466.487258] lr : __handle_irq_event_percpu+0x60/0x228 [ 466.492327] sp : ffffffc080003ea0 [ 466.495646] x29: ffffffc080003ea0 x28: ffffff80c0c94200 x27: 0000000000000000 [ 466.502807] x26: ffffffd08dd81d7b x25: ffffff80c0c94200 x24: ffffff8003bdc200 [ 466.509969] x23: 0000000000000001 x22: 00000000000000a7 x21: 0000000000000000 [ 466.517130] x20: ffffff8041bb0000 x19: 0000000000000001 x18: 0000000000000000 [ 466.524291] x17: ffffffafadfb0000 x16: ffffffc080000000 x15: 0000000000000000 [ 466.531452] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000 [ 466.538613] x11: 0000000000000000 x10: 0000000000000000 x9 : ffffffd08c527eb0 [ 466.545777] x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000 [ 466.552941] x5 : ffffffd08c4100d0 x4 : ffffffafadfb0000 x3 : ffffffc080003f70 [ 466.560102] x2 : ffffffc0829e8058 x1 : 0000000000000001 x0 : 0000000000000000 [ 466.567263] Call trace: [ 466.569711] v3d_irq+0x118/0x2e0 [v3d] (P) [ 466. ---truncated---
{
"affected": [],
"aliases": [
"CVE-2025-21688"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-10T16:15:38Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/v3d: Assign job pointer to NULL before signaling the fence\n\nIn commit e4b5ccd392b9 (\"drm/v3d: Ensure job pointer is set to NULL\nafter job completion\"), we introduced a change to assign the job pointer\nto NULL after completing a job, indicating job completion.\n\nHowever, this approach created a race condition between the DRM\nscheduler workqueue and the IRQ execution thread. As soon as the fence is\nsignaled in the IRQ execution thread, a new job starts to be executed.\nThis results in a race condition where the IRQ execution thread sets the\njob pointer to NULL simultaneously as the `run_job()` function assigns\na new job to the pointer.\n\nThis race condition can lead to a NULL pointer dereference if the IRQ\nexecution thread sets the job pointer to NULL after `run_job()` assigns\nit to the new job. When the new job completes and the GPU emits an\ninterrupt, `v3d_irq()` is triggered, potentially causing a crash.\n\n[ 466.310099] Unable to handle kernel NULL pointer dereference at virtual address 00000000000000c0\n[ 466.318928] Mem abort info:\n[ 466.321723] ESR = 0x0000000096000005\n[ 466.325479] EC = 0x25: DABT (current EL), IL = 32 bits\n[ 466.330807] SET = 0, FnV = 0\n[ 466.333864] EA = 0, S1PTW = 0\n[ 466.337010] FSC = 0x05: level 1 translation fault\n[ 466.341900] Data abort info:\n[ 466.344783] ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000\n[ 466.350285] CM = 0, WnR = 0, TnD = 0, TagAccess = 0\n[ 466.355350] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\n[ 466.360677] user pgtable: 4k pages, 39-bit VAs, pgdp=0000000089772000\n[ 466.367140] [00000000000000c0] pgd=0000000000000000, p4d=0000000000000000, pud=0000000000000000\n[ 466.375875] Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP\n[ 466.382163] Modules linked in: rfcomm snd_seq_dummy snd_hrtimer snd_seq snd_seq_device algif_hash algif_skcipher af_alg bnep binfmt_misc vc4 snd_soc_hdmi_codec drm_display_helper cec brcmfmac_wcc spidev rpivid_hevc(C) drm_client_lib brcmfmac hci_uart drm_dma_helper pisp_be btbcm brcmutil snd_soc_core aes_ce_blk v4l2_mem2mem bluetooth aes_ce_cipher snd_compress videobuf2_dma_contig ghash_ce cfg80211 gf128mul snd_pcm_dmaengine videobuf2_memops ecdh_generic sha2_ce ecc videobuf2_v4l2 snd_pcm v3d sha256_arm64 rfkill videodev snd_timer sha1_ce libaes gpu_sched snd videobuf2_common sha1_generic drm_shmem_helper mc rp1_pio drm_kms_helper raspberrypi_hwmon spi_bcm2835 gpio_keys i2c_brcmstb rp1 raspberrypi_gpiomem rp1_mailbox rp1_adc nvmem_rmem uio_pdrv_genirq uio i2c_dev drm ledtrig_pattern drm_panel_orientation_quirks backlight fuse dm_mod ip_tables x_tables ipv6\n[ 466.458429] CPU: 0 UID: 1000 PID: 2008 Comm: chromium Tainted: G C 6.13.0-v8+ #18\n[ 466.467336] Tainted: [C]=CRAP\n[ 466.470306] Hardware name: Raspberry Pi 5 Model B Rev 1.0 (DT)\n[ 466.476157] pstate: 404000c9 (nZcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n[ 466.483143] pc : v3d_irq+0x118/0x2e0 [v3d]\n[ 466.487258] lr : __handle_irq_event_percpu+0x60/0x228\n[ 466.492327] sp : ffffffc080003ea0\n[ 466.495646] x29: ffffffc080003ea0 x28: ffffff80c0c94200 x27: 0000000000000000\n[ 466.502807] x26: ffffffd08dd81d7b x25: ffffff80c0c94200 x24: ffffff8003bdc200\n[ 466.509969] x23: 0000000000000001 x22: 00000000000000a7 x21: 0000000000000000\n[ 466.517130] x20: ffffff8041bb0000 x19: 0000000000000001 x18: 0000000000000000\n[ 466.524291] x17: ffffffafadfb0000 x16: ffffffc080000000 x15: 0000000000000000\n[ 466.531452] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000\n[ 466.538613] x11: 0000000000000000 x10: 0000000000000000 x9 : ffffffd08c527eb0\n[ 466.545777] x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000\n[ 466.552941] x5 : ffffffd08c4100d0 x4 : ffffffafadfb0000 x3 : ffffffc080003f70\n[ 466.560102] x2 : ffffffc0829e8058 x1 : 0000000000000001 x0 : 0000000000000000\n[ 466.567263] Call trace:\n[ 466.569711] v3d_irq+0x118/0x2e0 [v3d] (P)\n[ 466.\n---truncated---",
"id": "GHSA-gjcc-jpc7-jff7",
"modified": "2025-02-21T18:31:08Z",
"published": "2025-02-10T18:30:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21688"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/01a7e3a43ee2e6607169a75889412344c10b37fd"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1f66a3a1a516e4d545906916b3f3c8d1c5e909e6"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3059e7aaa280daea57bb069fbc65225e1bb95014"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/431fb709db434565b5e7cee82a11bd681a794fd3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6cfafcad46e95351c477da0ae7e3acb8f7550ada"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6e64d6b3a3c39655de56682ec83e894978d23412"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9793206fbf5293534c3a79d78f196e2cbb48c22d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a9401cd5d1bb5a0b8d2bef09623ca43551cd6e8a"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.