{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2022-50163", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-50163", "idYear": 2022, "status": "PUBLISHED", "publishedAt": "2025-06-18T11:03:18.317Z", "updatedAt": "2026-05-23T15:23:45.876Z", "importedAt": "2026-10-24T01:56:49.724Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "ax25: fix incorrect dev_tracker usage", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nax25: fix incorrect dev_tracker usage\n\nWhile investigating a separate rose issue [1], and enabling\nCONFIG_NET_DEV_REFCNT_TRACKER=y, Bernard reported an orthogonal ax25 issue [2]\n\nAn ax25_dev can be used by one (or many) struct ax25_cb.\nWe thus need different dev_tracker, one per struct ax25_cb.\n\nAfter this patch is applied, we are able to focus on rose.\n\n[1] https://lore.kernel.org/netdev/fb7544a1-f42e-9254-18cc-c9b071f4ca70@free.fr/\n\n[2]\n[ 205.798723] reference already released.\n[ 205.798732] allocated in:\n[ 205.798734] ax25_bind+0x1a2/0x230 [ax25]\n[ 205.798747] __sys_bind+0xea/0x110\n[ 205.798753] __x64_sys_bind+0x18/0x20\n[ 205.798758] do_syscall_64+0x5c/0x80\n[ 205.798763] entry_SYSCALL_64_after_hwframe+0x44/0xae\n[ 205.798768] freed in:\n[ 205.798770] ax25_release+0x115/0x370 [ax25]\n[ 205.798778] __sock_release+0x42/0xb0\n[ 205.798782] sock_close+0x15/0x20\n[ 205.798785] __fput+0x9f/0x260\n[ 205.798789] ____fput+0xe/0x10\n[ 205.798792] task_work_run+0x64/0xa0\n[ 205.798798] exit_to_user_mode_prepare+0x18b/0x190\n[ 205.798804] syscall_exit_to_user_mode+0x26/0x40\n[ 205.798808] do_syscall_64+0x69/0x80\n[ 205.798812] entry_SYSCALL_64_after_hwframe+0x44/0xae\n[ 205.798827] ------------[ cut here ]------------\n[ 205.798829] WARNING: CPU: 2 PID: 2605 at lib/ref_tracker.c:136 ref_tracker_free.cold+0x60/0x81\n[ 205.798837] Modules linked in: rose netrom mkiss ax25 rfcomm cmac algif_hash algif_skcipher af_alg bnep snd_hda_codec_hdmi nls_iso8859_1 i915 rtw88_8821ce rtw88_8821c x86_pkg_temp_thermal rtw88_pci intel_powerclamp rtw88_core snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio coretemp snd_hda_intel kvm_intel snd_intel_dspcfg mac80211 snd_hda_codec kvm i2c_algo_bit drm_buddy drm_dp_helper btusb drm_kms_helper snd_hwdep btrtl snd_hda_core btbcm joydev crct10dif_pclmul btintel crc32_pclmul ghash_clmulni_intel mei_hdcp btmtk intel_rapl_msr aesni_intel bluetooth input_leds snd_pcm crypto_simd syscopyarea processor_thermal_device_pci_legacy sysfillrect cryptd intel_soc_dts_iosf snd_seq sysimgblt ecdh_generic fb_sys_fops rapl libarc4 processor_thermal_device intel_cstate processor_thermal_rfim cec snd_timer ecc snd_seq_device cfg80211 processor_thermal_mbox mei_me processor_thermal_rapl mei rc_core at24 snd intel_pch_thermal intel_rapl_common ttm soundcore int340x_thermal_zone video\n[ 205.798948] mac_hid acpi_pad sch_fq_codel ipmi_devintf ipmi_msghandler drm msr parport_pc ppdev lp parport ramoops pstore_blk reed_solomon pstore_zone efi_pstore ip_tables x_tables autofs4 hid_generic usbhid hid i2c_i801 i2c_smbus r8169 xhci_pci ahci libahci realtek lpc_ich xhci_pci_renesas [last unloaded: ax25]\n[ 205.798992] CPU: 2 PID: 2605 Comm: ax25ipd Not tainted 5.18.11-F6BVP #3\n[ 205.798996] Hardware name: To be filled by O.E.M. To be filled by O.E.M./CK3, BIOS 5.011 09/16/2020\n[ 205.798999] RIP: 0010:ref_tracker_free.cold+0x60/0x81\n[ 205.799005] Code: e8 d2 01 9b ff 83 7b 18 00 74 14 48 c7 c7 2f d7 ff 98 e8 10 6e fc ff 8b 7b 18 e8 b8 01 9b ff 4c 89 ee 4c 89 e7 e8 5d fd 07 00 <0f> 0b b8 ea ff ff ff e9 30 05 9b ff 41 0f b6 f7 48 c7 c7 a0 fa 4e\n[ 205.799008] RSP: 0018:ffffaf5281073958 EFLAGS: 00010286\n[ 205.799011] RAX: 0000000080000000 RBX: ffff9a0bd687ebe0 RCX: 0000000000000000\n[ 205.799014] RDX: 0000000000000001 RSI: 0000000000000282 RDI: 00000000ffffffff\n[ 205.799016] RBP: ffffaf5281073a10 R08: 0000000000000003 R09: fffffffffffd5618\n[ 205.799019] R10: 0000000000ffff10 R11: 000000000000000f R12: ffff9a0bc53384d0\n[ 205.799022] R13: 0000000000000282 R14: 00000000ae000001 R15: 0000000000000001\n[ 205.799024] FS: 0000000000000000(0000) GS:ffff9a0d0f300000(0000) knlGS:0000000000000000\n[ 205.799028] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 205.799031] CR2: 00007ff6b8311554 CR3: 000000001ac10004 CR4: 00000000001706e0\n[ 205.799033] Call Trace:\n[ 205.799035] \n[ 205.799038] ? ax25_dev_device_down+0xd9/\n---truncated---", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "feef318c855a361a1eccd880f33e88c460eb63b4", "status": "affected", "versionType": "git", "lessThan": "d08e3d71e5942f77fbff7f3529ed7fc82fbb3dfa" }, { "version": "feef318c855a361a1eccd880f33e88c460eb63b4", "status": "affected", "versionType": "git", "lessThan": "4294df1374450912b2f64ee3cf575069fc784679" }, { "version": "feef318c855a361a1eccd880f33e88c460eb63b4", "status": "affected", "versionType": "git", "lessThan": "d7c4c9e075f8cc6d88d277bc24e5d99297f03c06" }, { "version": "b8c07f33aa35dacf5444e7053ed9662d1869f536", "status": "affected", "versionType": "git" }, { "version": "b1e0a6fc7f17500484c402ad1cd018c24dfc14b3", "status": "affected", "versionType": "git" }, { "version": "7528d0f2210c3a1154186175516ed37aa970f2b1", "status": "affected", "versionType": "git" }, { "version": "57cc15f5fd550316e4104eaf84b90fbc640fd7a5", "status": "affected", "versionType": "git" }, { "version": "b982492ec3a115e0a136856a1b2dbe32f2d21a0e", "status": "affected", "versionType": "git" }, { "version": "4.14.277", "status": "affected", "versionType": "semver", "lessThan": "4.15" }, { "version": "4.19.240", "status": "affected", "versionType": "semver", "lessThan": "4.20" }, { "version": "5.4.190", "status": "affected", "versionType": "semver", "lessThan": "5.5" }, { "version": "5.10.112", "status": "affected", "versionType": "semver", "lessThan": "5.11" }, { "version": "5.15.35", "status": "affected", "versionType": "semver", "lessThan": "5.16" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "5.17", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "5.17" }, { "version": "5.18.18", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.18.*" }, { "version": "5.19.2", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.19.*" }, { "version": "6.0", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }