| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npps: Fix a use-after-free\n\nOn a board running ntpd and gpsd, I'm seeing a consistent use-after-free\nin sys_exit() from gpsd when rebooting:\n\n pps pps1: removed\n ------------[ cut here ]------------\n kobject: '(null)' (00000000db4bec24): is not initialized, yet kobject_put() is being called.\n WARNING: CPU: 2 PID: 440 at lib/kobject.c:734 kobject_put+0x120/0x150\n CPU: 2 UID: 299 PID: 440 Comm: gpsd Not tainted 6.11.0-rc6-00308-gb31c44928842 #1\n Hardware name: Raspberry Pi 4 Model B Rev 1.1 (DT)\n pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n pc : kobject_put+0x120/0x150\n lr : kobject_put+0x120/0x150\n sp : ffffffc0803d3ae0\n x29: ffffffc0803d3ae0 x28: ffffff8042dc9738 x27: 0000000000000001\n x26: 0000000000000000 x25: ffffff8042dc9040 x24: ffffff8042dc9440\n x23: ffffff80402a4620 x22: ffffff8042ef4bd0 x21: ffffff80405cb600\n x20: 000000000008001b x19: ffffff8040b3b6e0 x18: 0000000000000000\n x17: 0000000000000000 x16: 0000000000000000 x15: 696e6920746f6e20\n x14: 7369203a29343263 x13: 205d303434542020 x12: 0000000000000000\n x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000\n x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000\n x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000\n x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000\n Call trace:\n kobject_put+0x120/0x150\n cdev_put+0x20/0x3c\n __fput+0x2c4/0x2d8\n ____fput+0x1c/0x38\n task_work_run+0x70/0xfc\n do_exit+0x2a0/0x924\n do_group_exit+0x34/0x90\n get_signal+0x7fc/0x8c0\n do_signal+0x128/0x13b4\n do_notify_resume+0xdc/0x160\n el0_svc+0xd4/0xf8\n el0t_64_sync_handler+0x140/0x14c\n el0t_64_sync+0x190/0x194\n ---[ end trace 0000000000000000 ]---\n\n...followed by more symptoms of corruption, with similar stacks:\n\n refcount_t: underflow; use-after-free.\n kernel BUG at lib/list_debug.c:62!\n Kernel panic - not syncing: Oops - BUG: Fatal exception\n\nThis happens because pps_device_destruct() frees the pps_device with the\nembedded cdev immediately after calling cdev_del(), but, as the comment\nabove cdev_del() notes, fops for previously opened cdevs are still\ncallable even after cdev_del() returns. I think this bug has always\nbeen there: I can't explain why it suddenly started happening every time\nI reboot this particular board.\n\nIn commit d953e0e837e6 (\"pps: Fix a use-after free bug when\nunregistering a source.\"), George Spelvin suggested removing the\nembedded cdev. That seems like the simplest way to fix this, so I've\nimplemented his suggestion, using __register_chrdev() with pps_idr\nbecoming the source of truth for which minor corresponds to which\ndevice.\n\nBut now that pps_idr defines userspace visibility instead of cdev_add(),\nwe need to be sure the pps->dev refcount can't reach zero while\nuserspace can still find it again. So, the idr_remove() call moves to\npps_unregister_cdev(), and pps_idr now holds a reference to pps->dev.\n\n pps_core: source serial1 got cdev (251:1)\n <...>\n pps pps1: removed\n pps_core: unregistering pps1\n pps_core: deallocating pps1" |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "drivers/pps/clients/pps-gpio.c", |
| "drivers/pps/clients/pps-ktimer.c", |
| "drivers/pps/clients/pps-ldisc.c", |
| "drivers/pps/clients/pps_parport.c", |
| "drivers/pps/kapi.c", |
| "drivers/pps/kc.c", |
| "drivers/pps/pps.c", |
| "drivers/ptp/ptp_ocp.c", |
| "include/linux/pps_kernel.h" |
| ], |
| "versions": [ |
| { |
| "version": "d953e0e837e65ecc1ddaa4f9560f7925878a0de6", |
| "lessThan": "785c78ed0d39d1717cca3ef931d3e51337b5e90e", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "d953e0e837e65ecc1ddaa4f9560f7925878a0de6", |
| "lessThan": "1a7735ab2cb9747518a7416fb5929e85442dec62", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "d953e0e837e65ecc1ddaa4f9560f7925878a0de6", |
| "lessThan": "c4041b6b0a7a3def8cf3f3d6120ff337bc4c40f7", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "d953e0e837e65ecc1ddaa4f9560f7925878a0de6", |
| "lessThan": "91932db1d96b2952299ce30c1c693d834d10ace6", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "d953e0e837e65ecc1ddaa4f9560f7925878a0de6", |
| "lessThan": "cd3bbcb6b3a7caa5ce67de76723b6d8531fb7f64", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "d953e0e837e65ecc1ddaa4f9560f7925878a0de6", |
| "lessThan": "7e5ee3281dc09014367f5112b6d566ba36ea2d49", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "d953e0e837e65ecc1ddaa4f9560f7925878a0de6", |
| "lessThan": "85241f7de216f8298f6e48540ea13d7dcd100870", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "d953e0e837e65ecc1ddaa4f9560f7925878a0de6", |
| "lessThan": "c79a39dc8d060b9e64e8b0fa9d245d44befeefbe", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "77327a71f9841b7dfa708195d1cb133d4ef4a989", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "cd59fb14918a6b20c1ac8be121fa6397b97b00cb", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "49626fbb0360332e40fd76a48cb2ba876d6134ad", |
| "status": "affected", |
| "versionType": "git" |
| } |
| ] |
| }, |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "affected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "drivers/pps/clients/pps-gpio.c", |
| "drivers/pps/clients/pps-ktimer.c", |
| "drivers/pps/clients/pps-ldisc.c", |
| "drivers/pps/clients/pps_parport.c", |
| "drivers/pps/kapi.c", |
| "drivers/pps/kc.c", |
| "drivers/pps/pps.c", |
| "drivers/ptp/ptp_ocp.c", |
| "include/linux/pps_kernel.h" |
| ], |
| "versions": [ |
| { |
| "version": "3.9", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "3.9", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.4.291", |
| "lessThanOrEqual": "5.4.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.10.235", |
| "lessThanOrEqual": "5.10.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.15.179", |
| "lessThanOrEqual": "5.15.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.1.129", |
| "lessThanOrEqual": "6.1.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.6.76", |
| "lessThanOrEqual": "6.6.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.12.13", |
| "lessThanOrEqual": "6.12.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.13.2", |
| "lessThanOrEqual": "6.13.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.14", |
| "lessThanOrEqual": "*", |
| "status": "unaffected", |
| "versionType": "original_commit_for_fix" |
| } |
| ] |
| } |
| ], |
| "cpeApplicability": [ |
| { |
| "nodes": [ |
| { |
| "operator": "OR", |
| "negate": false, |
| "cpeMatch": [ |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.9", |
| "versionEndExcluding": "5.4.291" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.9", |
| "versionEndExcluding": "5.10.235" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.9", |
| "versionEndExcluding": "5.15.179" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.9", |
| "versionEndExcluding": "6.1.129" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.9", |
| "versionEndExcluding": "6.6.76" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.9", |
| "versionEndExcluding": "6.12.13" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.9", |
| "versionEndExcluding": "6.13.2" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.9", |
| "versionEndExcluding": "6.14" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.2.40" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.4.87" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.8.1" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/785c78ed0d39d1717cca3ef931d3e51337b5e90e" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/1a7735ab2cb9747518a7416fb5929e85442dec62" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/c4041b6b0a7a3def8cf3f3d6120ff337bc4c40f7" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/91932db1d96b2952299ce30c1c693d834d10ace6" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/cd3bbcb6b3a7caa5ce67de76723b6d8531fb7f64" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/7e5ee3281dc09014367f5112b6d566ba36ea2d49" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/85241f7de216f8298f6e48540ea13d7dcd100870" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/c79a39dc8d060b9e64e8b0fa9d245d44befeefbe" |
| } |
| ], |
| "title": "pps: Fix a use-after-free", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2024-57979", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
