CVE-2022-49328

Fixes an issue caught by KASAN about use-after-free in mt76txqschedule by protecting mtxq->wcid with rculock between mt76txqschedule and stainfo_[alloc, free].

[18853.876689] ================================================================== [18853.876751] BUG: KASAN: use-after-free in mt76txqschedule+0x204/0xaf8 [mt76] [18853.876773] Read of size 8 at addr ffffffaf989a2138 by task mt76-tx phy0/883 [18853.876786] [18853.876810] CPU: 5 PID: 883 Comm: mt76-tx phy0 Not tainted 5.10.100-fix-510-56778d365941-kasan #5 0b01fbbcf41a530f52043508fec2e31a4215

[18853.876840] Call trace: [18853.876861] dumpbacktrace+0x0/0x3ec [18853.876878] showstack+0x20/0x2c [18853.876899] dumpstack+0x11c/0x1ac [18853.876918] printaddressdescription+0x74/0x514 [18853.876934] kasanreport+0x134/0x174 [18853.876948] asanreportload8noabort+0x44/0x50 [18853.876976] mt76txqschedule+0x204/0xaf8 [mt76 074e03e4640e97fe7405ee1fab547b81c4fa45d2] [18853.877002] mt76txqscheduleall+0x2c/0x48 [mt76 074e03e4640e97fe7405ee1fab547b81c4fa45d2] [18853.877030] mt7921txworker+0xa0/0x1cc [mt7921common f0875ebac9d7b4754e1010549e7db50fbd90a047] [18853.877054] _mt76workerfn+0x190/0x22c [mt76 074e03e4640e97fe7405ee1fab547b81c4fa45d2] [18853.877071] kthread+0x2f8/0x3b8 [18853.877087] retfromfork+0x10/0x30 [18853.877098] [18853.877112] Allocated by task 941: [18853.877131] kasansavestack+0x38/0x68 [18853.877147] _kasankmalloc+0xd4/0xfc [18853.877163] kasankmalloc+0x10/0x1c [18853.877177] _kmalloc+0x264/0x3c4 [18853.877294] stainfoalloc+0x460/0xf88 [mac80211] [18853.877410] ieee80211prepconnection+0x204/0x1ee0 [mac80211] [18853.877523] ieee80211mgdauth+0x6c4/0xa4c [mac80211] [18853.877635] ieee80211auth+0x20/0x2c [mac80211] [18853.877733] rdevauth+0x7c/0x438 [cfg80211] [18853.877826] cfg80211mlmeauth+0x26c/0x390 [cfg80211] [18853.877919] nl80211authenticate+0x6d4/0x904 [cfg80211] [18853.877938] genlrcvmsg+0x748/0x93c [18853.877954] netlinkrcvskb+0x160/0x2a8 [18853.877969] genlrcv+0x3c/0x54 [18853.877985] netlinkunicastkernel+0x104/0x1ec [18853.877999] netlinkunicast+0x178/0x268 [18853.878015] netlinksendmsg+0x3cc/0x5f0 [18853.878030] socksendmsg+0xb4/0xd8 [18853.878043] _syssendmsg+0x2f8/0x53c [18853.878058] _syssendmsg+0xe8/0x150 [18853.878071] _syssendmsg+0xc4/0x1f4 [18853.878087] _arm64compatsyssendmsg+0x88/0x9c [18853.878101] el0svccommon+0x1b4/0x390 [18853.878115] doel0svccompat+0x8c/0xdc [18853.878131] el0svccompat+0x10/0x1c [18853.878146] el0synccompathandler+0xa8/0xcc [18853.878161] el0synccompat+0x188/0x1c0 [18853.878171] [18853.878183] Freed by task 10927: [18853.878200] kasansavestack+0x38/0x68 [18853.878215] kasansettrack+0x28/0x3c [18853.878228] kasansetfreeinfo+0x24/0x48 [18853.878244] _kasanslabfree+0x11c/0x154 [18853.878259] kasanslabfree+0x14/0x24 [18853.878273] slabfreefreelisthook+0xac/0x1b0 [18853.878287] kfree+0x104/0x390 [18853.878402] stainfofree+0x198/0x210 [mac80211] [18853.878515] _stainfodestroypart2+0x230/0x2d4 [mac80211] [18853.878628] _stainfoflush+0x300/0x37c [mac80211] [18853.878740] ieee80211setdisassoc+0x2cc/0xa7c [mac80211] [18853.878851] ieee80211mgddeauth+0x4a4/0x10a0 [mac80211] [18853.878962] ieee80211deauth+0x20/0x2c [mac80211] [18853.879057] rdevdeauth+0x7c/0x438 [cfg80211] [18853.879150] cfg80211mlmedeauth+0x274/0x414 [cfg80211] [18853.879243] cfg80211mlmedown+0xe4/0x118 [cfg80211] [18853.879335] cfg80211disconnect+0x218/0x2d8 [cfg80211] [18853.879427] _cfg80211leave+0x17c/0x240 [cfg80211] [18853.879519] cfg80211leave+0x3c/0x58 [cfg80211] [18853.879611] wiphysuspend+0xdc/0x200 [cfg80211] [18853.879628] dpmruncallback+0x58/0x408 [18853.879642] _devicesuspend+0x4cc/0x864 [18853.879658] asyncsuspend+0x34/0xf4 [18 ---truncated---

References

Affected packages

Debian:11 / linux

Package

Name: linux
Purl: pkg:deb/debian/linux?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

5.*

5.10.46-4

5.10.46-5

5.10.70-1~bpo10+1

5.10.70-1

5.10.84-1

5.10.92-1~bpo10+1

5.10.92-1

5.10.92-2

5.10.103-1~bpo10+1

5.10.103-1

5.10.106-1

5.10.113-1

5.10.120-1~bpo10+1

5.10.120-1

5.10.127-1

5.10.127-2~bpo10+1

5.10.127-2

5.10.136-1

5.10.140-1

5.10.148-1

5.10.149-1

5.10.149-2

5.10.158-1

5.10.158-2

5.10.162-1

5.10.178-1

5.10.178-2

5.10.178-3

5.10.179-1

5.10.179-2

5.10.179-3

5.10.179-4

5.10.179-5

5.10.191-1

5.10.197-1

5.10.205-1

5.10.205-2

5.10.209-1

5.10.209-2

5.10.216-1

5.10.218-1

5.10.221-1

5.10.223-1

5.10.226-1

5.10.234-1

5.13.9-1~exp1

5.13.9-1~exp2

5.13.12-1~exp1

5.14-1~exp1

5.14-1~exp2

5.14.1-1~exp1

5.14.2-1~exp1

5.14.3-1~exp1

5.14.6-1

5.14.6-2

5.14.6-3

5.14.9-1

5.14.9-2~bpo11+1

5.14.9-2

5.14.12-1

5.14.16-1

5.15-1~exp1

5.15.1-1~exp1

5.15.2-1~exp1

5.15.3-1

5.15.5-1

5.15.5-2~bpo11+1

5.15.5-2

5.15.15-1

5.15.15-2~bpo11+1

5.15.15-2

5.16~rc1-1~exp1

5.16~rc3-1~exp1

5.16~rc4-1~exp1

5.16~rc5-1~exp1

5.16~rc6-1~exp1

5.16~rc7-1~exp1

5.16~rc8-1~exp1

5.16.3-1~exp1

5.16.4-1~exp1

5.16.7-1

5.16.7-2

5.16.10-1

5.16.11-1~bpo11+1

5.16.11-1

5.16.12-1~bpo11+1

5.16.12-1

5.16.14-1

5.16.18-1

5.17~rc3-1~exp1

5.17~rc4-1~exp1

5.17~rc5-1~exp1

5.17~rc6-1~exp1

5.17~rc7-1~exp1

5.17~rc8-1~exp1

5.17.1-1~exp1

5.17.3-1

5.17.6-1

5.17.11-1

5.18-1~exp1

5.18.2-1~bpo11+1

5.18.2-1

5.18.5-1

5.18.14-1~bpo11+1

5.18.14-1

5.18.16-1~bpo11+1

5.18.16-1

5.19~rc4-1~exp1

5.19~rc6-1~exp1

5.19-1~exp1

5.19.6-1

5.19.11-1~bpo11+1

5.19.11-1

6.*

6.0~rc7-1~exp1

6.0-1~exp1

6.0.2-1

6.0.3-1~bpo11+1

6.0.3-1

6.0.5-1

6.0.6-1

6.0.6-2

6.0.7-1

6.0.8-1

6.0.10-1

6.0.10-2

6.0.12-1~bpo11+1

6.0.12-1

6.0.12-1+alpha

6.1~rc3-1~exp1

6.1~rc5-1~exp1

6.1~rc6-1~exp1

6.1~rc7-1~exp1

6.1~rc8-1~exp1

6.1.1-1~exp1

6.1.1-1~exp2

6.1.2-1~exp1

6.1.4-1

6.1.7-1

6.1.8-1

6.1.8-1+sh4

6.1.11-1

6.1.12-1~bpo11+1

6.1.12-1

6.1.15-1~bpo11+1

6.1.15-1

6.1.20-1~bpo11+1

6.1.20-1

6.1.20-2~bpo11+1

6.1.20-2

6.1.25-1

6.1.27-1~bpo11+1

6.1.27-1

6.1.37-1

6.1.38-1

6.1.38-2~bpo11+1

6.1.38-2

6.1.38-3

6.1.38-4~bpo11+1

6.1.38-4

6.1.52-1

6.1.55-1~bpo11+1

6.1.55-1

6.1.64-1

6.1.66-1

6.1.67-1

6.1.69-1~bpo11+1

6.1.69-1

6.1.76-1~bpo11+1

6.1.76-1

6.1.82-1

6.1.85-1

6.1.90-1~bpo11+1

6.1.90-1

6.1.94-1~bpo11+1

6.1.94-1

6.1.98-1

6.1.99-1

6.1.106-1

6.1.106-2

6.1.106-3

6.1.112-1

6.1.115-1

6.1.119-1

6.1.123-1

6.1.124-1

6.1.128-1

6.1.129-1

6.3.1-1~exp1

6.3.2-1~exp1

6.3.4-1~exp1

6.3.5-1~exp1

6.3.7-1~bpo12+1

6.3.7-1

6.3.11-1

6.4~rc6-1~exp1

6.4~rc7-1~exp1

6.4.1-1~exp1

6.4.4-1~bpo12+1

6.4.4-1

6.4.4-2

6.4.4-3~bpo12+1

6.4.4-3

6.4.11-1

6.4.13-1

6.5~rc4-1~exp1

6.5~rc6-1~exp1

6.5~rc7-1~exp1

6.5.1-1~exp1

6.5.3-1~bpo12+1

6.5.3-1

6.5.6-1

6.5.8-1

6.5.10-1~bpo12+1

6.5.10-1

6.5.13-1

6.6.3-1~exp1

6.6.4-1~exp1

6.6.7-1~exp1

6.6.8-1

6.6.9-1

6.6.11-1

6.6.13-1~bpo12+1

6.6.13-1

6.6.15-1

6.6.15-2

6.7-1~exp1

6.7.1-1~exp1

6.7.4-1~exp1

6.7.7-1

6.7.9-1

6.7.9-2

6.7.12-1~bpo12+1

6.7.12-1

6.8.9-1

6.8.11-1

6.8.12-1~bpo12+1

6.8.12-1

6.9.2-1~exp1

6.9.7-1~bpo12+1

6.9.7-1

6.9.8-1

6.9.9-1

6.9.10-1~bpo12+1

6.9.10-1

6.9.11-1

6.9.12-1

6.10-1~exp1

6.10.1-1~exp1

6.10.3-1

6.10.4-1

6.10.6-1~bpo12+1

6.10.6-1

6.10.7-1

6.10.9-1

6.10.11-1~bpo12+1

6.10.11-1

6.10.12-1

6.11~rc4-1~exp1

6.11~rc5-1~exp1

6.11-1~exp1

6.11.2-1

6.11.4-1

6.11.5-1~bpo12+1

6.11.5-1

6.11.6-1

6.11.7-1

6.11.9-1

6.11.10-1~bpo12+1

6.11.10-1

6.12~rc6-1~exp1

6.12.3-1

6.12.5-1

6.12.6-1

6.12.8-1

6.12.9-1~bpo12+1

6.12.9-1

6.12.9-1+alpha

6.12.10-1

6.12.11-1

6.12.11-1+alpha

6.12.11-1+alpha.1

6.12.12-1~bpo12+1

6.12.12-1

6.12.13-1

6.12.15-1

6.12.16-1

6.12.17-1

6.12.19-1

6.12.20-1

6.13~rc6-1~exp1

6.13~rc7-1~exp1

6.13.2-1~exp1

6.13.3-1~exp1

6.13.4-1~exp1

6.13.5-1~exp1

6.13.6-1~exp1

6.13.7-1~exp1

6.13.8-1~exp1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:12 / linux

Package

Name: linux
Purl: pkg:deb/debian/linux?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.18.5-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:13 / linux

Package

Name: linux
Purl: pkg:deb/debian/linux?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.18.5-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}