kernel/linux.git/drivers/net/wireless/intersil, branch v6.1.186

wifi: p54: validate RX frame length in p54_rx_eeprom_readback()

2026-08-19T15:15:55+00:00

[ Upstream commit ebd6d37fa94bee929e0b4c9ca19fdf9b1dcf6cea ] p54_rx_eeprom_readback() copies the requested EEPROM slice out of a device-supplied readback frame without checking that the skb actually holds that many bytes. Commit da1b9a55ff11 ("wifi: p54: prevent buffer-overflow in p54_rx_eeprom_readback()") closed the destination overflow by copying a fixed priv->eeprom_slice_size (and rejecting a mismatched advertised len), but the source side is still unbounded: nothing verifies the frame is long enough to supply that many bytes. A malicious USB device can send a short frame whose advertised len matches priv->eeprom_slice_size while the payload is truncated. The equality check passes and memcpy() reads past the end of the skb, leaking adjacent heap: BUG: KASAN: slab-out-of-bounds in p54_rx (drivers/net/wireless/intersil/p54/txrx.c:507) Read of size 1016 at addr ffff88800f077114 by task swapper/0/0 Call Trace: ... __asan_memcpy (mm/kasan/shadow.c:105) p54_rx (drivers/net/wireless/intersil/p54/txrx.c:507) p54u_rx_cb (drivers/net/wireless/intersil/p54/p54usb.c:163) __usb_hcd_giveback_urb (drivers/usb/core/hcd.c:1657) dummy_timer (drivers/usb/gadget/udc/dummy_hcd.c:2005) ... The buggy address belongs to the object at ffff88800f0770c0 which belongs to the cache skbuff_small_head of size 704 The buggy address is located 84 bytes inside of allocated 704-byte region [ffff88800f0770c0, ffff88800f077380) Check that the slice fits in the skb before copying. Fixes: 7cb770729ba8 ("p54: move eeprom code into common library") Reported-by: Weiming Shi Assisted-by: Claude:claude-opus-4-8 Signed-off-by: Xiang Mei Acked-by: Christian Lamparter Link: https://patch.msgid.link/20260628000510.4152481-1-xmei5@asu.edu Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin

wifi: p54: prevent buffer-overflow in p54_rx_eeprom_readback()

2025-06-27T10:07:26+00:00

commit da1b9a55ff116cb040528ef664c70a4eec03ae99 upstream. Robert Morris reported: |If a malicious USB device pretends to be an Intersil p54 wifi |interface and generates an eeprom_readback message with a large |eeprom->v1.len, p54_rx_eeprom_readback() will copy data from the |message beyond the end of priv->eeprom. | |static void p54_rx_eeprom_readback(struct p54_common *priv, | struct sk_buff *skb) |{ | struct p54_hdr *hdr = (struct p54_hdr *) skb->data; | struct p54_eeprom_lm86 *eeprom = (struct p54_eeprom_lm86 *) hdr->data; | | if (priv->fw_var >= 0x509) { | memcpy(priv->eeprom, eeprom->v2.data, | le16_to_cpu(eeprom->v2.len)); | } else { | memcpy(priv->eeprom, eeprom->v1.data, | le16_to_cpu(eeprom->v1.len)); | } | [...] The eeprom->v{1,2}.len is set by the driver in p54_download_eeprom(). The device is supposed to provide the same length back to the driver. But yes, it's possible (like shown in the report) to alter the value to something that causes a crash/panic due to overrun. This patch addresses the issue by adding the size to the common device context, so p54_rx_eeprom_readback no longer relies on possibly tampered values... That said, it also checks if the "firmware" altered the value and no longer copies them. The one, small saving grace is: Before the driver tries to read the eeprom, it needs to upload >a< firmware. the vendor firmware has a proprietary license and as a reason, it is not present on most distributions by default. Cc: Reported-by: Robert Morris Closes: https://lore.kernel.org/linux-wireless/28782.1747258414@localhost/ Fixes: 7cb770729ba8 ("p54: move eeprom code into common library") Signed-off-by: Christian Lamparter Link: https://patch.msgid.link/20250516184107.47794-1-chunkeey@gmail.com Signed-off-by: Johannes Berg Signed-off-by: Greg Kroah-Hartman

wifi: p54: Use IRQF_NO_AUTOEN flag in request_irq()

2024-12-14T18:53:25+00:00

[ Upstream commit bcd1371bd85e560ccc9159b7747f94bfe43b77a6 ] disable_irq() after request_irq() still has a time gap in which interrupts can come. request_irq() with IRQF_NO_AUTOEN flag will disable IRQ auto-enable when request IRQ. Fixes: cd8d3d321285 ("p54spi: p54spi driver") Signed-off-by: Jinjie Ruan Signed-off-by: Kalle Valo Link: https://patch.msgid.link/20240910124314.698896-2-ruanjinjie@huawei.com Signed-off-by: Sasha Levin

wifi: orinoco: Fix an error handling path in orinoco_cs_probe()

2023-07-19T14:21:06+00:00

[ Upstream commit 67a81d911c01225f426cc6bee2373df044c1a9b7 ] Should orinoco_cs_config() fail, some resources need to be released as already done in the remove function. While at it, remove a useless and erroneous comment. The probe is orinoco_cs_probe(), not orinoco_cs_attach(). Fixes: 15b99ac17295 ("[PATCH] pcmcia: add return value to _config() functions") Signed-off-by: Christophe JAILLET Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/e24735ce4d82901d5f7ea08419eea53bfdde3d65.1684568286.git.christophe.jaillet@wanadoo.fr Signed-off-by: Sasha Levin

wifi: orinoco: Fix an error handling path in spectrum_cs_probe()

2023-07-19T14:21:06+00:00

[ Upstream commit 925244325159824385209e3e0e3f91fa6bf0646c ] Should spectrum_cs_config() fail, some resources need to be released as already done in the remove function. While at it, remove a useless and erroneous comment. The probe is spectrum_cs_probe(), not spectrum_cs_attach(). Fixes: 15b99ac17295 ("[PATCH] pcmcia: add return value to _config() functions") Signed-off-by: Christophe JAILLET Reviewed-by: Simon Horman Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/c0bc0c21c58ca477fc5521607615bafbf2aef8eb.1684567733.git.christophe.jaillet@wanadoo.fr Signed-off-by: Sasha Levin

wifi: orinoco: check return value of hermes_write_wordrec()

2023-03-10T08:32:54+00:00

[ Upstream commit 1e346cbb096a5351a637ec1992beffbf330547f0 ] There is currently no return check for writing an authentication type (HERMES_AUTH_SHARED_KEY or HERMES_AUTH_OPEN). It looks like it was accidentally skipped. This patch adds a return check similar to the other checks in __orinoco_hw_setup_enc() for hermes_write_wordrec(). Detected using the static analysis tool - Svace. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Alexey Kodanev Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20221227133306.201356-1-aleksei.kodanev@bell-sw.com Signed-off-by: Sasha Levin

wifi: p54: Fix comment typo

2022-09-07T07:59:37+00:00

The double `to' is duplicated in the comment, remove one. Signed-off-by: Jason Wang Acked-by: Christian Lamparter Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20220811120340.12968-1-wangborong@cdjrlc.com

wifi: move from strlcpy with unused retval to strscpy

2022-09-02T08:47:22+00:00

Follow the advice of the below link and prefer 'strscpy' in this subsystem. Conversion is 1:1 because the return value is not used. Generated by a coccinelle script. Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/ Signed-off-by: Wolfram Sang Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20220830201457.7984-2-wsa+renesas@sang-engineering.com

wifi: p54: add missing parentheses in p54_flush()

2022-07-18T11:54:50+00:00

The assignment of the value to the variable total in the loop condition must be enclosed in additional parentheses, since otherwise, in accordance with the precedence of the operators, the conjunction will be performed first, and only then the assignment. Due to this error, a warning later in the function after the loop may not occur in the situation when it should. Found by Linux Verification Center (linuxtesting.org) with SVACE. Signed-off-by: Rustam Subkhankulov Fixes: 0d4171e2153b ("p54: implement flush callback") Acked-by: Christian Lamparter Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20220714134831.106004-1-subkhankulov@ispras.ru

wifi: p54: Use the bitmap API to allocate bitmaps

2022-07-18T11:51:54+00:00

Use bitmap_zalloc()/bitmap_free() instead of hand-writing them. It is less verbose and it improves the semantic. Signed-off-by: Christophe JAILLET Acked-by: Christian Lamparter Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/2755b8b7d85a2db0663d39ea6df823f94f3401b3.1656939750.git.christophe.jaillet@wanadoo.fr